My boyfriend and I had sex a day before I started ovulating. I started my first birthcontrol patch the same week but I'm worried that I didn't wait long enough for it to work. I know the doctor says to wait a whole week and it was the 6th day that we had sex. After two days I've had this weird feeling in my lower abdomen and sometimes I feel like I'm gonna throw up. I'm now on my second patch. Could I be pregnant, could it be something else or am I just making myself feel this way?