I don't think a pregnancy test would show postitive after 7 days, it's too early. The earliest I ever got a positive reading on a sensitive test was 11 days past ovulation... and this showed a very faint line that I could hardly see. It really sounds unlikely that the other guy is the father, I think you're safe! Good luck!
thanks for the useful advice, i am abit worried as i was with another guy only one night on the 24th april, then a week later exactly 7 days after the 24th i take a home pregnancy test and it shows positive. so im realy praying it isnt from this one night mistake. but it looks positive that it really isnt and that its more likely from the beginning of april end of march, bcos my preiod ended around the 26thish of march. plus the doctor said its unlikely the test would show positive 7 days later. but the time i had sex on the 24th, my period would have been either really due or i would of had them so thats another positive i already suspected i was pregnant that same week, hopefully im stressing for no reason
see that doesnt make sense to me :/ i just want to know if it could be the april 20-24 dates or earlier?
The 40 weeks of pregnancy is counted from the first day of your LMP (last menstral period). In other words, roughly 2 weeks before conception.