okay, so I did have my period and it was really heavy, but only for a couple days.. my boobs have been really sore, im having mood swings, and also been peeing quite frequently. before I started my period it was a little over a week late, and I just blacked out out of no where. I couldn t see or hear anything, and I do not know why. so, am I pregnant? and if not then what is causing all of this?