I've been on metformin for 4 months now. Started AF 3wk ago & been spotting and its going 2wk Monday total of wks will be 4 and I'm still spotting.. It's suppose to help me lose some weight and the possibility of becoming can happen says the doc. But I'm worried about the spotting.. Has any one had these werid symptoms if so please comment blow.. Thanks and don't be rude if you don't have anything nice to say just click on away.