Metformin for me, was to help me regulate my cycle. It was horrible, sometimes going 3 months without AF, but metformin regulated it, and even though I can never know now if I've had m/cs in the past, because of delayed periods, cramps, sore breasts (sorry about tmi) i just put all that down to pcos, but now, im currently in my third trimester. Hang in there, keep believing, and all the best. SSBD to you.