What are the chances I'm pregnant

Ok my boyfriend and I have had sex multiple times during this month. We use condoms EVERY time we have sex, and haven't had any malfunctions with them. He even pulls out before he finishes (he has never finished inside me). But for some reason I'm worried I could be pregnant. I'm supposed to start my period in like a week, my boobs hurt and I'm having a lot of discharge. Am I okay? Please give me reassurance.