My menstrual cycle is usually 34 days. I am trying to conceive since few months now. This cycle my doctor prescribed me metformin and ovacare. However very unexpectedly, I started bleeding like period on 26th day of the cycle itself. It started with spotting since morning and by night I had to wear a pad due to increased flow. Please tell me why did I get my periods almost 7 days before my usual date and what should be d course of action ?