Negative hpt 12 dpo

So I only got BFNs so far. Yesterday I woke up with some light pink spotting at 13 dpo (if my app was right that is...it could be 12 dpo if I ovulated later) when AF was expected at 14 DPO (today). Just assumed it was my period, was sad but ready to move on. Well...36 hours later, that was the only bleeding...

Negative hpt 12 dpo. 14 DPO and Negative Pregnancy Test (BFN) At 14 DPO, receiving a negative pregnancy test result doesn’t necessarily mean you aren’t pregnant. It’s possible that the hCG hormone levels in your body haven’t risen sufficiently to be detected by the test. If you haven’t begun your menstrual cycle, consider taking another test in a few days.

Around 9-12 DPO, the blastocyst implants itself into the lining of the uterus. This process, called implantation, can sometimes cause light spotting or implantation bleeding, as well as implantation cramps. ... Reasons for a Big Fat Negative Pregnancy Test. A BFN 11 DPO, although disheartening, does not conclusively mean one is not pregnant. ...

You're pregnant, but it's too early to test, so you got a negative result. Your urine is diluted from drinking too much water in preparation to take the test. You're ovulating, so those surging hormones are making you feel rough. You really want to be pregnant, and your body is playing tricks on you.It’s a science term for a rare lab test glitch that causes a faulty result. The hook effect is also called a “high-dose hook effect” or “prozone effect.”. Technically, you can have a ...The accuracy of a home pregnancy test can vary, depending on how you use it and your menstrual cycle. To improve the accuracy of a home pregnancy test, you will want to pay attention to the following details: Testing too early. You shouldn’t test earlier than 12 DPO. It is best to wait until your period is due. Urine is diluted.Jan 22, 2011. #1. Well here I am again on DPO 12 (I have a 26 day Cycle and O'd around the 9th) and of course I have been testing since DPO 10 and still all Negatives . I was just wondering if I still chance as I am due to start my period on Sunday. It's weird though usually every month I have a hundred pregnancy symptoms and this month barely ...Jan 22, 2011. #1. Well here I am again on DPO 12 (I have a 26 day Cycle and O'd around the 9th) and of course I have been testing since DPO 10 and still all Negatives . I was just wondering if I still chance as I am due to start my period on Sunday. It's weird though usually every month I have a hundred pregnancy symptoms and this month barely ...

Mar 29, 2023 · c. clh0987. Mar 29, 2023 at 11:02 AM. Implantation can happen anywhere from 6-12 dpo, but most commonly 8- 9- or 10- (vast majority fall in this range) then it takes approximately 24 hours for hcg to rise enough to get a positive test so it is absolutely possible to test negative at 10 DPO and then test positive a day or two later. Implantation typically happens 8-10 DPO, very rarely any later than that. Implantation after 10 DPO also has a high rate of MC. Having said that, it is possible that OP implated on 10 DPO and therefore wouldn't get a positive until 11 DPO, absolutely. Positive pregnancy test 12 dpo after IUI. s. savreese07. May 16, 2022 at 6:42 PM. Hi there! I had IUI done Thursday May 5th and did a trigger shot May 4th. I tested out to make sure the trigger was gone. Two days ago I had stark white strip tests. This evening my boobs hurt so bad and I couldn’t wait anymore anyone have this happen and we ...In fact, most pregnant women don’t even begin to experience pregnancy symptoms until 1-2 weeks after a missed period. A pregnancy test at 9 DPO could very well test negative before getting a positive test a few days later. One analysis even found that fewer than 10% of pregnancy charts analyzed showed a positive test at 9 DPO.I am currently 12 dpo and had another negative hpt this morning. I have generally regular 31 day cycles, and ovulated on the 5th of this month (Oct). We made sure that we had sex before and during the positive ovulation result. I believe that I had what was possible implantation bleeding Wednesday night (the 14th), the tiniest bit Thursday (the ...yes i did after a few days it was something like this; 7 dpo - positive 8,9,10,11 dpo - negative 12,13 dpo - faint positive 14 dpo - positive 1-2 weeks on clear blue digi 17 dpo - positive 2-3 weeks on clear blue digi for anyone who's interested this is what my tests looked like once they started going positive again xXx https://i1230 ...Implantation usually occurs at about 6 to 12 DPO, but it’s hard to pinpoint based on symptoms alone. Typically enough, implantation symptoms can be really similar to ovulation symptoms, ... Why am I at 20 DPO with negative pregnancy test? If you’re 20 DPO looking at a negative pregnancy test, we get it.

Due to the slowed digestive process, food retention is prolonged in the stomach and intestines, which may result in bloating. 3. Nausea. Morning sickness, which can hit you any time of the day, is a telltale sign of early pregnancy. A whopping 80 percent of pregnant women get this not-so-fun symptom. New studies show that some pregnancy conditions are hereditary. So, if you haven’t noticed any pregnancy symptoms by 12 DPO, you should take a pregnancy test after 14 DPO or the first day of the next expected period. By then, the hCG hormone levels will be high enough to tell if you are pregnant, even if you do not feel pregnant yet. Testing too early can result in a false negative pregnancy test at 12 DPO. Implantation timing and hCG production can vary, leading to a delayed positive result. Low hCG levels or a faulty test can also contribute to a negative result. Remember, every person's body is unique, and pregnancy tests may not always provide definitive results.j. janandjan. Feb 17, 2024 at 6:31 AM. So, I took a blue dye test on Tuesday that was faint positive. Went to confirm with a red dye, which was negative. My period was due on Monday, and ALL week I got negative tests between 4 digital, 6 FRER, and several cheap Walmart tests. Even yesterday morning I was still getting negatives but I FELT like ...

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yes i did after a few days it was something like this; 7 dpo - positive 8,9,10,11 dpo - negative 12,13 dpo - faint positive 14 dpo - positive 1-2 weeks on clear blue digi 17 dpo - positive 2-3 weeks on clear blue digi for anyone who's interested this is what my tests looked like once they started going positive again xXx https://i1230 ...Are there certain symptoms to look for that mean you’re likely to get a BFP (“big fat positive” pregnancy test)? Can I take a pregnancy test at 11 DPO? 11 DPO is still technically early to take a pregnancy test. That is, you might be pregnant and still get a negative pregnancy test today. It’s best to wait until 12 DPO to take a ...14 DPO and Negative Pregnancy Test (BFN) At 14 DPO, receiving a negative pregnancy test result doesn’t necessarily mean you aren’t pregnant. It’s possible that the hCG hormone levels in your body haven’t risen sufficiently to be detected by the test. If you haven’t begun your menstrual cycle, consider taking another test in a few days.What Is Meant By 12 DPO BFN? If the pregnancy test you took at 12 DPO is negative, then do not worry. Getting a BFN (big fat negative) at the 12 DPO pregnancy test is not always accurate, especially when the pregnancy test you bought and used is not sensitive enough to detect lower levels of hCG in urine or blood.1. Cramping 12 DPO may feel a lot like the cramps you get a few days before or during your periods. After ovulation, usually, it may take somewhere between 7 and …

Implantation occurs around 6-12 DPO and symptoms of implantation, such as spotting and cramping, also occur around this time. ... it will most likely come out negative when you take a test again after 14 DPO. False-negative results are also common before 14 DPO, since hCG may not have risen high enough yet for the …10 DPO is still a little bit early to notice some of the early signs of pregnancy because implantation (when your fertilized egg implants into the lining of your uterus) may only just have happened. This doesn’t necessarily mean you won’t get a positive pregnancy test this cycle, though. You still need to wait until 14 DPO or the first day ...14-15 DPO pregnancy test are 99.9% accurate So while you can get a positive pregnancy test as early as 9 DPO , the average is closer to 14 DPO, or around the time of your next expected period. And some can be a few days after 14 days post-ovulation, so if you’re getting some potential symptoms and your period hasn’t started yet, your BFP ...Ways to view old negatives include the use of a scanner to turn them into digital files and taking backlit photographs of them with a digital camera, which also turns them into dig...Posted 12-12-22 I KNOW this is a dumb question— but asking it to keep my hopes up. Has anyone ever gotten a negative on a HPT at 9DPO, but a positive at 10-11 DPO?This explains our recommendation to wait until 12 DPO to take a pregnancy test. If 10 DPO is the latest likely day for implantation, and if it takes the full two days for hCG levels to build up to detectable levels, then 12 DPO is the first day that you should get a positive pregnancy test if you are truly pregnant. ... If you get a negative ...12dpo.. vvfl.. first cycle ttc after treatment for Ashermans. I’m in shock… it’s a faint positive at 12dpo…. I have been having brown discharge for about 4-5 days.. but my actual period isn’t due until tomorrow or the day after. This is my first cycle TTC since 6 months and 3 surgeries to remove 60% scarring...It’s recommended to take a pregnancy test at between 12 DPO and 14 DPO for the most accurate result. A 10 DPO negative pregnancy test doesn’t always mean that you’re not pregnant ‒ it might just be that the hCG levels aren’t yet recognized on your pregnancy test.Mar 24, 2022 · Mar 24, 2022 at 10:36 AM. It’s possible you are stressing yourself out which can delay your period. Do things that will help you relax, a walk, music, dancing, cuddle with a pet. If you don’t get your period is 2-3 days then test again. Like. Implantation occurs between 6-12 DPO but can be between 5-14 DPO and is most often around 9 DPO. Then it takes 2-5 days for hCG to rise enough to be detectable on a HPT.BFP stands for “big fat positive,” whereas BFN stands for “big fat negative.” Even if you are pregnant, the absence of symptoms at 14 DPO is conceivable. Similarly, while you may be pregnant, you may not receive a positive pregnancy test result. Each pregnancy is unique in its own way.

Average DPO for the first "false" negative test result: 10.3 DPO: Percentage of pregnancy charts with a positive test at 10 DPO: 10%: Percentage of pregnancy charts which show negative results before a positive result: 17%: Average time between the expected period and the first positive pregnancy test: 0.5 days before the expected period.

I tested at 8-12 DPO and only got positives on 12 DPO. I'm attaching pictures for reference, the black and white one is Wednesday (11 DPO) morning, the one marked 12 is Thursday morning (12 DPO) and the one with the digital is Thursday afternoon with a 2.5 hour hold. It may just be really early, Or you ovulated later than you though.Once it dries, urine may leave a faint line where it evaporated – an " evap line ." Unlike positive result lines, which are usually dark or bright, an evap line will be colorless. Very diluted urine. To minimize the possibility of this happening, take your test first thing in the morning, when your urine is most concentrated.Download Peanut to connect with women at a similar stage in life. Try today for free. Rated 4.3. Trusted by 5M+ women. You’re 19 DPO. If you’re pregnant, you’re well into your fifth week. If you’re still waiting on a BFP, you might be running out of patience.Here are some 21 DPO symptoms to watch out for: Frequent bathroom breaks – Your hormones are sending extra blood to your kidneys, so you’re peeing more often. Nausea and vomiting – Whoever called pregnancy nausea “ morning sickness ” obviously never experienced it, because it can strike at any time of day.Implantation normally occurs 6-12 days after ovulation and may be accompanied by cramping. ... 7 DPO and negative pregnancy test (BFN) ... Taking a pregnancy test at 7 DPO and getting a positive result is unlikely but not unheard of. Even if you are pregnant, your body may not have produced enough hCG to register on a home …Anonymous. Hey all! This is my first time using forums, but this is my first month TTC. I am 18 DPO and my period is 4 days late, and I am getting negative tests. Am I out this month or has anyone ever experienced getting a late BFP? I'm in a similar situation 8 days late on my period, I've had symptoms and spotting but no BFP yet 😕.Anyone else have a Negative HPT at 13 dpo, only to get a positive one later? Original poster's comments (3) 3. Comment. Advertisement | page continues below. 16. comments ... Posted 12-17-10.Implantation bleeding would normally happen anywhere between 6 to 12 DPO. But for people with longer cycles, implantation bleeding at 21 DPO can happen. If you notice some particularly heavy implantation bleeding, ... What if I get a 21 DPO negative pregnancy test? What if you’ve been testing and you’re disappointed again by a 21 …

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Interpreting Pregnancy Test . Pregnancy . Pregnancy Due Date Calculator ; IVF Due Date ... (if my app was right that is...it could be 12 dpo if I ovulated later) when AF was expected at 14 DPO (today). ... (Aug 2) I took a test the morning and it was negative , then the evening past 9 when I wiped I saw some blood and thought is AF showing up ...Sep 19, 2011 · Hi all I am 15 dpo today and had BFN yesterday (Clearblue digi) and Saturday am (tescos own brand), AF still not here, but feeling really dizzy for most of the day since 12 dpo and also suffering from ovarian twinges like you referred to indiasmommy. I am going to test again on Wednesday.. Just want to know either way - its so frustrating!! As an alternative, you might experience a chemical pregnancy, an early miscarriage that can result in a false-positive test result. You will receive a negative result if you perform a second chemical pregnancy test two weeks after ovulation or on the first day of your subsequent period. 12 DPO BFP: Positive test resultImplantation usually takes place between 6 to 12 DPO. Hence, its occurrence at 18 DPO is less likely. Yet, if ovulation dates have been misjudged, implantation might still happen at 18 DPO. ... Big Fat Negative (BFN) at 18 DPO. An 18 DPO negative pregnancy test result doesn’t rule out a pregnancy. If your test result is negative, but you ...Pregnancy Week 40. Pregnancy Week 41. Pregnancy Week 42. So last night (12dpo), I got what I think is a pretty clear BFP on a first response, but this afternoon I took a clear blue digital and it said “not pregnant”. With my first pregnancy, I got negatives on first responses until I was 2 days late. I kind of hate that I got a positive ...Mar 21, 2024 ... Going through all of my DPO symptoms until I got my positive pregnancy test!!! We're so happy and so grateful!Positive Test Results. A positive pregnancy test result at 10 DPO indicates that you have successfully conceived. This is an exciting milestone on your journey to becoming a parent. At this stage, the fertilized egg has traveled through the fallopian tube and implanted itself into the uterine lining.5 days late still negative pregnancy test went from a normal cycle to i don't even know how long it's day 38 ☹️ I think my period got scared because ob-gyn wanted to give me blood tested on 3rd day of period but it never came ... 20+ DPO Symptoms but negative test... am i pregnant heres my story. ... Pregnancy Week 12. Pregnancy Week … ….

Nov 11, 2012. #12. Melts said: Today I am pretty sure it's 11dpo according to fertility friend it's 11dpo. I took a test and it was negative. Do I still have a chance or should I count myself out this month again. hey melts, don't count yourself out just yet! i didn't get my bfp till the day af was due!2 DPO- ALOT of cramping, feels like im going to start my period WAY to early, hard cervix. 3 DPO- cramping, twinges, feel like im going to start my period,soft cervix. 4 DPO- Headaches on and off, cramping, soft cervix. 5 DPO- Headaches on and off, very moody (everything dh says to me i feel offended by!)soft cervix.What Is Meant By 12 DPO BFN? If the pregnancy test you took at 12 DPO is negative, then do not worry. Getting a BFN (big fat negative) at the 12 DPO pregnancy test is not always accurate, especially when the pregnancy test you bought and used is not sensitive enough to detect lower levels of hCG in urine or blood.Shawn Hessinger chats with Mike Blumenthal of Near Media about how a small business should manage its online reputation and how to respond to negative reviews. * Required Field You...There's a high probability that at 12 DPO a negative is going to remain a negative but not definitive. BFP #1 09/26/2013 EDD 06/04/2013 MMC 11/01/2013 BFP #2 05/15/2014 EDD 01/24/2015It’s a science term for a rare lab test glitch that causes a faulty result. The hook effect is also called a “high-dose hook effect” or “prozone effect.”. Technically, you can have a ...If you get a negative result (BFN) at 13 DPO, you may want to retake the pregnancy test a few days later or consult your doctor. Remember that pregnancy tests work on the level of the hCG hormone. If this level is high, usually after implantation, you will get a positive result. Contrarily, if it is low, your pregnancy test may come out negative.A positive test at 10 days post-ovulation has a good chance of being a false positive. You may either get your period a week later, test negative, or have a chemical pregnancy, which is when the egg is fertilized but is unable to implant or grow. This will lead to an early miscarriage, and it can definitely be disappointing.DPO, or days past ovulation, is a common pregnancy related acronym. It refers to the time after ovulation but before your next period starts. DPO is of interest to those who are trying to conceive because implantation can happen as soon as five or six days DPO and pregnancy tests can detect hCG in the urine as early as eight days DPO, though waiting until at least 14 DPO is recommended for ...Testing too early can result in a false negative pregnancy test at 12 DPO. Implantation timing and hCG production can vary, leading to a delayed positive result. Low hCG levels or a faulty test can also contribute to a negative result. Remember, every person's body is unique, and pregnancy tests may not always provide definitive results. Negative hpt 12 dpo, We recommend waiting until 12 DPO to take a pregnancy test. By 12 DPO, if you are truly pregnant, you are likely to get a BFP (which stands for “big fat positive” AKA a positive pregnancy test). When you test earlier than 12 DPO, there is a higher chance of getting a false negative pregnancy test—that is, a negative test even though you ..., , Having a positive pregnancy test is an exciting experience for many women. However, for some women, the news of a negative test result can be really discouraging. In this blog post, we will discuss a situation where a woman receives a negative pregnancy test result 12 days past ovulation (DPO) but eventually gets a …, It’s a science term for a rare lab test glitch that causes a faulty result. The hook effect is also called a “high-dose hook effect” or “prozone effect.”. Technically, you can have a ..., Adding on to this, Fertility Friend collected data on 6000 charts where a user recorded a negative test then a positive test (so people with an inclination to test early) and found that on average the first positive was at 12.72 DPO (median 12 DPO). The graph that shows the distribution of first positive tests by day, 09/13/2012 20:14. Subject: Negative pregnancy test 11-12 DPO. Still hope? quote. Anonymous. I really thought I had symptoms this time so, against my better judgement, broke down and took a First Response Early test. Test says it can detect HCG in 61% of people 6 days before period is due., You might get a false 12 DPO negative if you test too early, since you might actually be pregnant but your body hasn’t built up enough hCG yet. On the other hand, a false positive can also occur for several reasons. One possibility is a chemical pregnancy, which is very early pregnancy loss., What Does Getting a Negative Pregnancy Test (BFN) At 9 DPO Mean? ... By 12 DPO, most sensitive tests will give pregnant women a positive result. Can You Get a Positive Pregnancy Test (BFP) At 9 DPO? While a 9 DPO positive pregnancy test is possible, it may not be reliable. It can take a couple of days after that for hCG levels to be high …, Jan 22, 2011 · Jan 22, 2011. #1. Well here I am again on DPO 12 (I have a 26 day Cycle and O'd around the 9th) and of course I have been testing since DPO 10 and still all Negatives . I was just wondering if I still chance as I am due to start my period on Sunday. It's weird though usually every month I have a hundred pregnancy symptoms and this month barely ... , New studies show that some pregnancy conditions are hereditary. So, if you haven’t noticed any pregnancy symptoms by 12 DPO, you should take a pregnancy test after 14 DPO or the first day of the next expected period. By then, the hCG hormone levels will be high enough to tell if you are pregnant, even if you do not feel pregnant yet. , BFP stands for “big fat positive,” whereas BFN stands for “big fat negative.” Even if you are pregnant, the absence of symptoms at 14 DPO is conceivable. Similarly, while you may be pregnant, you may not receive …, Mar 24, 2022 · Mar 24, 2022 at 10:36 AM. It’s possible you are stressing yourself out which can delay your period. Do things that will help you relax, a walk, music, dancing, cuddle with a pet. If you don’t get your period is 2-3 days then test again. Like. , The vinegar pregnancy test is a simple test that can be done at home. The test is done by mixing vinegar and urine. If the woman is pregnant, the vinegar will change the color of the urine. The vinegar pregnancy test is not as accurate as other tests, such as a blood test or a urine test. However, the vinegar pregnancy test is a cheap and easy ... , Yes. With my first I felt very dizzy and swore I was preggo 10 dpo. I got a bfn and was totally bummed. 13 dpo I took one on a whim and it was a bfp! This time I did not think I was preggo, took a test 13 dpo and it was questionable. Got my bfp 15 dpo (the day my period was due). Good luck!, Mar 11, 2020 · This explains our recommendation to wait until 12 DPO to take a pregnancy test. If 10 DPO is the latest likely day for implantation, and if it takes the full two days for hCG levels to build up to detectable levels, then 12 DPO is the first day that you should get a positive pregnancy test if you are truly pregnant. Any earlier than that, and ... , What Does Getting a Negative Pregnancy Test (BFN) At 9 DPO Mean? ... By 12 DPO, most sensitive tests will give pregnant women a positive result. Can You Get a Positive Pregnancy Test (BFP) At 9 DPO? While a 9 DPO positive pregnancy test is possible, it may not be reliable. It can take a couple of days after that for hCG levels to be high …, Oct 12, 2023 · 18 DPO is a time when many women start to wonder if they are pregnant or not. If you have not gotten pregnant by this point, it may be time to take a pregnancy test. The two week wait is an important time in the journey of trying to conceive, and it’s important to stay informed about what could happen during this time frame. Avi Steen. , A negative pregnancy test a week or more after your missed period indicates that your chance of being pregnant is less than 1-2%. A positive pregnancy test usually means that you are pregnant. However, sometimes it is possible to be pregnant even though you had a negative pregnancy test., The vinegar pregnancy test is a simple test that can be done at home. The test is done by mixing vinegar and urine. If the woman is pregnant, the vinegar will change the color of the urine. The vinegar pregnancy test is not as accurate as other tests, such as a blood test or a urine test. However, the vinegar pregnancy test is a cheap and easy ..., Hi ladies, So like the title says 12 DPO and negative test, I read somewhere (whether it was a valid article or not who knows) basically says that if you don't get a positive result by 12dpo then the odds of you getting a positive is 12.3% or something like that,not great odds right, anyhow the info stuck and so have decided not to test again,waste any more money or obsess about it anymore., Microsoft Excel is a powerful business tool as it gives you the ability to calculate complex numbers and create intricate formulas. For instance, you can calculate the sum of multi..., Jan 7, 2020 ... 10:05. Go to channel · 13 negative pregnancy test | 16 DPO positive pregnancy test |Don't give up. Mariah Monique•280K views · 7:25. Go ..., Sep 2, 2018 at 8:58 PM. @JJandJose, you could have gotten a positive OPK, but no necessarily ovulated. The only ways to confirm ovulation are to temp daily or have it confirmed via blood test by your doctor. Maybe there’s more :) but OPK is not a reliable one. Your body may be trying to ovulate, but hasn’t yet. Like., A pregnancy test should be taken after a missed period, or at least 14 days after unprotected intercourse. However, some women may choose to test as early as 12 days post ovulation (DPO). A negative pregnancy test at 12 DPO can be disheartening, but it is important to remember that this does not necessarily mean that the woman is not pregnant., yes i did after a few days it was something like this; 7 dpo - positive 8,9,10,11 dpo - negative 12,13 dpo - faint positive 14 dpo - positive 1-2 weeks on clear blue digi 17 dpo - positive 2-3 weeks on clear blue digi for anyone who's interested this is what my tests looked like once they started going positive again xXx https://i1230 ..., You may gain a whole cup size — and that’s just during the first 12 weeks of pregnancy! Larger breasts can start manifesting as early as 10 DPO and keep growing from then on . You may also notice a crisscrossing of blue vessels across your growing bosom as blood flow increases to the area to prepare for breastfeeding. 10. Moodiness, BFP stands for “big fat positive,” whereas BFN stands for “big fat negative.” Even if you are pregnant, the absence of symptoms at 14 DPO is conceivable. Similarly, while you may be pregnant, you may not receive a positive pregnancy test result. Each pregnancy is unique in its own way., Ultimately, a 7 DPO pregnancy test may not be totally accurate. So is 7 DPO too early to test? Generally, yes, but a 7 DPO positive pregnancy test can happen, although it’s pretty rare. If it’s negative at 7 days post ovulation, that doesn’t necessarily mean that you’re not pregnant. It might just be a little too early to show., 10 past ovulation hpt is only 35% accurate. 11 DPO is about 50% accurate. So you still have a chance and it's really early to be testing. I tested today bfn and I'm 15 DPO so I'm most likey out this month and my period was due tuesday 3/27., Pregnancy Week 40. Pregnancy Week 41. Pregnancy Week 42. So last night (12dpo), I got what I think is a pretty clear BFP on a first response, but this afternoon I took a clear blue digital and it said “not pregnant”. With my first pregnancy, I got negatives on first responses until I was 2 days late. I kind of hate that I got a positive ..., It’s recommended to take a pregnancy test at between 12 DPO and 14 DPO for the most accurate result. A 10 DPO negative pregnancy test doesn’t always mean that you’re not pregnant ‒ it might just be that the hCG levels aren’t yet recognized on your pregnancy test., Jan 26, 2012 · Jan 26, 2012. #1. I am 11 DPO, I took a test this morning with my FMU and got a ..... I was using the EARLY pregnancy test strips ordered off of the internet that claim they are very sensitive, the package says 10 miu. I feel like if I were pregnant the test would have picked up something by now ... I decided to do a OPK, because I literally ... , Studies show that the fertile window is much larger than just O-1 and O. Here is an example of a study that you might want to look at. And eggs live on average 12-24 hours, but can live for much less than that, too. The evidence is pretty strong that it's better to have the sperm there waiting when the egg is released.