I'm 25, I had my period last month that lasted for full 8 days, non stop bleeding then the last day it just stopped. 2 weeks and a half later which is not usual with me my period returned same... I had it last friday, and today is thursday still bleeding. I change my pads ALOT.. I have never had sexual intercourse and no anti depressing medications however it only started behaving like this when I had a beer. Just one bottle, could that still be related? Or could it be just hormonal changes ? or weather changes?