Im sixteen years old, I've been sexually active w. A guy I've been seeing, we only had sex twice I am not on b.c & he didn't use a condom .. I am suppose to get my period this week I usually have cramps by now but I don't .. I get some pains in my stomach and for about a week now my nipples have been really sore nd I've noticed tht they get hard a lot more .. Am I pregnant ? =/