if i had sex with a guy on january 1, 2010 and i went and got me a pregnancy test at the clinic on january 4th and it was positive, but my period usually comes on the 1st or 2nd and i have had sex with other people before him
A pregnancy tests for the hormone made during pregnancy, HcG, which starts at a certain point after conception, which is why often times women have to wait a couple weeks after sex to find out if they're pregnant. If you had sex with someone on the first and missed your period the next day, but tested positive a few days later, I would take into consideration the men you had sex with prior to the man you had sex with in January, especially if you had sex with others in December.
Sara RN