Hi, I wanted to ask what may cause my period to be 2 weeks early. I had unprotected sex 2 weeks before this early period, and a week before the early period I experienced constipation the entire week, so I was bloated. I never experience constipation so I thought that it could be a sign of pregnancy. However, I did get my period, but it was 2 weeks early. I cannot explain that. Could you please help with this? Thank you!