I had unprotected sex 6 days ago on the 27th March. My period is usually (always for some reason) due on the 28th of each month. Didn't get my period. On the 31st I took emergency contraception (4 days) after sex and also went on the pill. I then started having a white discharge. I haven't had my period since last month. I think I stuffed up my body. I'm worried when I'll get my period. Am I pregnant?