My last period was on November 4th. I had unprotected sex on the 25th of Novemeber. My next period was supposed to start on the 7th of December but instead it came on the 2nd of Decemer. It lasted the normal 5 days although I was a worried about it coming on early. I am not on any birth control at all.
My period has since stopped but my breasts are still sore and I am starting to pee a lot more not to mention I am tired more tired than I've ever been.