my boyfriend and I had sex through out my whole fertile window and on my ovulation night, we used pre-seed . I was suppose to start my period 2 days ago and I didn't. today is day 3 no period. I have a lot of discharge and I'm tired all the time. my boobs aren't that tender but they have a little tenderness to them. I took a pregnancy test I think 2 days ago and it was negative. do I need to wait a little longer to test? could I be pregnant?.. my discharge the other night was different from any of my others..