Okay so my last period was Jan 22nd till the 28th, I've had unprotected sex with my boyfriend multiple times since then. I shouldnt get my period for another few days but I never usually get my period at exactly the same time. It's always every 4-5 weeks that I get a period. But I'm exhausted, have no energy to do anything at all, when I stand up I'm light headed, and sometimes I'm a little nausous in the morning. I also feel bloated and am constantly hungry! I had a miscarriage last year in April at 5 1/2 weeks and I remember getting cramping around the time I found out I was pregnant. Also it's around the same time that I got pregnant last year.