My periods have always been regular. March my period came a few days early, but completely normal. This month my period was almost on time, a day or so late. Started out normal on Saturday morning. By Sunday morning it was only light when I would wipe. Now, on Tuesday, its nothing at all but brownish discharge. I'm sure many things can cause this, but me and my bestfriend are going through the same thing & extremely worried about pregnancy or possible miscarriage. Yes, we have had unprotected sex with our boyfriend's. Any advice, opinions, help would be appreciated!