hi i am 18 and had unprotected sex one time with my boyfriend (and i am not on birth control). although he pulled out before cumming, i'm worried that he may have pre-ejaculated. it was 3 days after i finished my period, and i realize that this is the time when women are the least fertile. it's been 2 weeks since the intercourse and i'm just freaking out because my boobs are sore and i've been having diarrhea. the thing is, my boobs are both sore in the same place, towards my armpits..not the nipples (so i'm figuring its not cancerous). i also know that sore boobs can be a sign of ovulation OR pms.. im just going crazy and getting super paranoid because i'm worried about being pregnant. i still have about 1.5 weeks until i'm due for my period so i'm hoping and praying i'll get it (never thought i'd say THAT!) anyways i know this may seem stupid..but i was hoping SOMEONE might have wise words for me? thank youu