Suggest Treatment To Regularize Menstrual Cycle

I am Priyanka 26 year old my weight is 90 kg. I have a daughter of 3 year old. I have PCOs problem as well as I am suffering with fatty liver problem. For my fatty liver problem my Doctor says that I can not take any contraceptiv pills. Again for my PCOs my menstruation is irregular. I take only Glyciphage twise daily for my PCOs. I want another issue and regularise my period. Please tell me without regular menstruation how can concive.