Okay.. So I was suppose to get my on the 27 of this month... It's been 7 days and I'm late... I've had sex 2 weeks before (unprotected) and I guess it would be considered rough sex.. But I haven't had my period and I just keep feel pain near my Uterus? ( like how Menstrational Cramps would feel) and I feel like I'm on my period. I'm PMSing and everything but nothing. I have been stressing out quite a bit lately.. Could that be a cause? Help please.