Me and my partnet had sex several times last months, we used protection every time andshe came on her period on the 12th of July and came off after 4 days which is normal for her. Between the 2nd and the last time we had sex that month, there was a 2 week gap, We are quite paranoid as she has constipation for around 2 weeks now, also she was very tired at one time this week, she also had pains near her bladder, but the docter said she may just have a problem with her bowls. we took a pregnancy test last sunday and that came back negative, it was just over 2 weeks since i had sex for the 2nd to last time, must this mean that if she is pregnant, it has happend on the last time we have had sex? if so, this friday it shall be two weeks since we had sex for the last time, so would that give me a possitive answer? id be greatfull for any advice as i am going crazy and cant sleep properly. thanks.