help???

So i had sex with my boyfriend. not the first partner i've had but the first time we have had sex. he didn't use a comdom at first but he put one on (a life style). since then, my boobs have been sore and my stomach is bigger and my discharge smells like bleach. is it possible i'm pregnant? i'm supposed to start my period in 3 days and it's been a week since we had sex.