Hi, I'm 20 years old and recently my gf told something that has had me worried. She told me that she felt nauseous after a couple days of taking her birth control pills, but we did have unprotected sex a week after her period started. I've been reading some stuff and it seems unlikely but I'm not sure and I am so worried, can anyone reassure me with something. I know that birth control can have a side effect of nausea when you start taking it again(because my gf stopped taking it for a week then started again yesterday) but I know that pre-cum can impregnate(I always pull out and we haven't done it twice in a row) but I'm just really scared, don't know what to do is there any immediate reassurance if anybody can give me some.