 [ Symptoms ] how long afrer sex does a pregnancy test show positvie  we had sex on like august 25 or 26 i took a pregnancy test september 6 and got a positive result took another on september 7 it was positive then another september 8 it was positive is it possible to be pregnant only 2 weeks after sex [ Disease ] three positive pregnancy tests yes it is possible to get a positive pregnancy test soon after unprotected sex if you are doubting the accuracy of your home tests call your doctor for a more accurate blood test for confirmation