2007-03-04 10:33:36 · 5 answers · asked by veryhappywife 2 in Pregnancy & Parenting ➔ Trying to Conceive
I took a pregnancy test seven full days before my period was due and got a positive.
How soon can I test? Well, first you gotta know how the test works. Briefly: the home pregnancy test (HPT) works by detecting a hormone called human chorionic gonadotropin (hCG.) When an egg is fertilized, it takes about 6 to 12 days to implant in the uterus, and then it begins to secrete hCG. It takes another day or two for enough hCG to build up and make its way into your pee. So, generally speaking, the earliest you can expect a positive HPT is 8 days past ovulation ("DPO") and the latest would be about 16 DPO. It is possible to get a positive test earlier or later, but not as common. In my experience, if you use a sensitive "early" test (anything that detects 25 mIU/mL of hCG or less) you can test around 12-14 DPO and feel reasonably secure with your results (the later you test, the more secure you can feel in its accuracy.)
If you do not chart or monitor your fertility in any way, and you think you may have conceived, you should wait 19 days (or longer) after having sex to test. Why 19?! Sperm can live approximately 5 days in the proper environment; if the sperm managed to live until you popped an egg, the actual conception could have taken place several days after the sex act that got the sperm there. To make sure you're not testing too early, assume the sperm had very long lives (5 days is considered a very long sperm life) and that conception occurred then. Then allow 14 days for the embryo to implant and develop enough hCG to show up on a pregnancy test (96% of pregnant women will test positive by then.)
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2007-03-04 10:38:53 · answer #1 · answered by ஐ♥Julian'sMommy♥ஐ 7 · 0⤊ 0⤋
When I was pregnant, I had a negative test 14 days after ovulation, and a positive test 5 days after that.
2007-03-04 12:08:48 · answer #2 · answered by kris 6 · 0⤊ 0⤋
You can check up to 5 days before your period is due, if you have a regular cycle. As soon as you scrump, you can not go take a test. You have to give the fertilized egg time to implant.
2007-03-04 11:51:14 · answer #3 · answered by haylsin 3 · 0⤊ 0⤋
well i waited a week after my period was due just to be certain i had missed it and i got a positve reading strait away
2007-03-04 10:37:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
depends
2007-03-04 10:55:48 · answer #5 · answered by caligal30821 1 · 0⤊ 1⤋