I'm about to be 18 and my boyfriend and I always have unprotected sex. And every I get my period. I've taken several pregnancy test. And all of them said no. But I've gained a lot of weight. My stomach is getting huge my boobs are getting big not a lot though. Ummm if I am pregnant this is my 2nd. And my first pregnancy was normal my period stopped and test said yes. But I don't know about this. Could I be pregnant.

You haven't missed a period? If that's the case than it's unlikely that you're pregnant.

If you still feel that you are, and there are no signs like a missed period or a positive pregnancy test, than see your doctor for an ultrasound, that will either confirm your fears, or put them to rest.