D.S. asks from San Francisco, CA on September 12, 2008
How Accurate Are Home Pregnancy Tests?
I'm a week late (now 8 days) for my period. But the First Response home test (not the digital but the one with the lines) clearly says I'm not pregnant. My husband and I have been "trying" for about 4 months. I'm turning 39 at the end of this month. I had a copper IUD in previously. The month after that came out I had a 30 or 31 day cycle. Then the 3 months after that I had a 24 day cycle (exactly the same each time). Now it's been 32 days and I'm still not having a period. I know that I should just "relax" and wait another 3 days or a week and test again. But I'm just wondering if anyone out there found that the home pregnancy tests did not detect the pregnancy hormone in them in the first week of their missed period, yet you were still pregnant.
I should also mention that I have several early pregnancy signs, the strongest of which is an overwhelming sense of fatigue (like, as if I just took 10 Benedryl's all at once) that comes and goes. When I get this fatigue it is like nothing I've experienced before. My brain just goes to mush, and I can't think of anything except getting back in bed. I've never had this before and it just suddenly started in the past week and a half.
Also, yes, I am aware of the age thing - but I have to say that my periods have been very regular forever. The only time I had a longer cycle (31 days) was the one month after the IUD came out. So I seriously doubt its perimenopause.
So What Happened?™
So, I got my period last night - 8 days after I expected it. But I'm happy to know that there are many out there who got false negatives. It's nice to have hope! I wasn't too happy to get the comments about perimenopause, menopause, my age, and lowered fertility due to my age. My 24 to 31 day cycles could be normal for all I know, since I never tracked it prior to 5 months back. When you're turning 39 and trying to conceive your 1st child, it's just not helpful to get comments about one's age or potentially lessened fertility. It does not help one to keep a positive mindset. I really just wanted to know if women out there did get false negatives on the test, and the answer is in fact yes! So thank you to all who responded with your experiences that helped to ease my mind, while I waited to see what the situation was.
A.M. answers from Yuba City on September 14, 2008
A.K. answers from San Francisco on September 13, 2008
E.F. answers from San Francisco on September 13, 2008
I would just wait. I'm too old for home pregnancy tests, but I remember my first pregnancy--I went for a test after my period was two weeks late, and it didn't show anything, but the week after, I had another test and I was pregnant. So be patient, and try to eat really well... If you are pregnant, the embryo will be forming the early cells for the backbone, etc.
K.G. answers from San Francisco on September 12, 2008
According to my father-in-law, a biochemist who developed some of these home tests, they are extremely accurate. However, back in 1972, my mom was pregnant but the pregnancy tests (not sure if they were home ones or what) said she was not. However, she did give birth to my brother! My understanding is that these tests are highly accurate, especially these days, but no test is 100% accurate. You might want to get a blood test. It is possible that you didn't ovulate this month (due to stress, extreme levels of exercise, or other factors), which can make you get your period much later or even skip a month. You might want to get the book "Taking Charge of Your Fertility," which will help you determine if your cycles are simply irregular or if you are having months where you are not ovulating. Then, you can take that info to your OB. I wish you the best!
1 mom found this helpful
C.S. answers from San Francisco on September 13, 2008
I think that they are pretty accurate, but if your cycle is longer than you expected, then you probably ovulated later than you expected, too. So it is possible you are testing early. I also recommend getting Taking Charge of Your Fertility. This book will help you to determine when you are about to ovulate, which is especially helpful if you have shorter or longer than a 28 day cycle. It will also tell you by an upward temperature shift that you are pregnant and a downward temperature shift that you are about to get your period. I found it to be much less of an emotional roller coaster while trying to get pregnant because I always knew what was going on, including when I was about to ovulate, whether or not I did ovulate and whether or not I was pregnant or about to get my period.
Best of luck to you!
S.R. answers from San Francisco on September 13, 2008
Can definitely be inaccurate. I got a false negative too. Good luck!
K.M. answers from San Francisco on September 13, 2008
Best wishes to you, D.. Dont "Just relax". this is a truly exciting time and should be fully enjoyed for how thrilling it will be when there is a positive test. Until then, dont get discouraged if it hasn't happened yet. Best of luck.
K.B. answers from San Francisco on September 14, 2008
I don't remember the timing exactly (i.e. how long it had been since I missed my period), but I definitely had a negative pregnancy test when I was actually pregnant with my son. It turns out it was too early for the test to have been accurate.
P.W. answers from San Francisco on September 12, 2008
Pretty darn accurate. It's hard to be patient, but save yourself the money.
A.K. answers from San Francisco on September 13, 2008
Same thing happened here (and I was using hospital grade tests I got from work) 4 days after my first negative test I got a positive. Hang in there and good luck.
D.V. answers from San Francisco on September 13, 2008
I had a negative on the day before my period was due (Early Response supposed to work 5 days before missed period). 5 days later I had a positive test. That was my daughter. I would wait until closer to the date for your longer cycle...So wait and test again.