 [ 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 ] depending on what kind of test you used some are very sensitive to the hormone that they measure to determine whether or not you are pregnant and can therefore give a positive reading earlier some can show a positive result at 2 weeks home tests can also give false negatives one common reason is that you are using or reading them incorrectly even if you think that can not possibly be the case make sure you read and carefully follow the directions exactly if you have had that many positive tests you could very likely be pregnant you should schedule an appointment with your doctor who will probably do another urine tests and a blood test to be sure