hi..welcome to healthcare magic..PCOD
usually leads to irregular menstrual cycles. the reason for your long duration cycles and bleeding for more than a month indicates that your cycles are anovulatory, meaning to say that you are not ovulating. metformin
is used in the treatment of PCOD, it helps you to reduce weight. but since you are planning to conceive, you should start taking ovulation inducing drugs like clomiphene
for atleast few months under the guidance of gynaecologist. your menstrual cycles also will get corrected. Also check your thyroid
profile and routine investigations done. good luck.