I had unprotected sex 2 weekends ago my period was supposed to start Wednesday and I'm currently 7 days late and I've taken 3 pregnancy tests and all negative. I'm normally not late on my period and if I am it's not a whole week. My books hurt, things smell stronger and one of the pregnancy test I took showed up positive right away and then 2 minutes later it turned to negative. But the other 2 tests were negative as well. The doctor doesn't want to run a pregnancy test for me because I'm only a week late. I don't understand. Any ideas on what's going on?