Hi..Iam 26 Years Now. Attained Menarche At 13 Years. I

Hi..Iam 26 years now. Attained menarche at 13 years. I had severe abdominal pain, backpain and vomitting during periods. But periods was regular. Got married 2 years back and not get conceived. So we consulted doctor. After doing scanning doctor told that Iam having PCOS. Adviced to take Obimet SR 1 gm daily. Iam taking this tablet from 6 months. Iam having severe hairloss and wait gain now. My thyroid tests are normal. After starting this tablet my periods are irregular and getting severe pain behind my thighs during my periods. What I should do ? Continue the tablet or consult an another doctor for second opinion. Waiting for your reply..Thank you....