Help! I was having sex a while ago.. And it was nice, and romantic. But, all of a sudden I felt weak and sick. I barely could stand up.. And I just started crying. We had been going a while, and he was kinda soft. It was really weird. Is this normal?? Im in my first month of birth control.. And I start my period tomorrow. Could any of this have caused it? That was about 45 minutes ago.. And I still feel sort of sick.