how soon after sex pregnancy test

You should wait at least 14 days after unprotected sex to take a pregnancy test for the most reliable results. Pregnancy tests detect the hormone hCG, which only becomes detectable in urine about 2-3 days after implantation, and implantation itself occurs roughly 6-12 days after fertilization. Most accurate testing is around 21 days after unprotected sex, usually after a missed period. Testing earlier than 14 days is likely to give false negative results because the hormone levels will not be high enough yet. If the menstrual cycle is irregular or the period date is unknown, testing approximately two weeks after sex is advised to increase accuracy.