What's wrong with me ?

Okay, so I just came down with a cold... but 2 weekends ago my BF and I had sex W/ a condom... anyway, he came in me with the condom on. after that is when I got sick, I've had stomach cramps and even threw up once at 4 in the morning on Sunday morning. Is it possible I'm prego? I'm 16 and it's really freaking me out... that or I could have to the flu. I mean is it even possible for the sperm to come out from the bottom of the condom? The bottom of the condom doesn't even go in me, it stays out but ahh!!! someone help me.