Dione 35 Tablet For Curing PCOD. Doctor?

I am taking dione35 tablet for PCOD from November. As advised by my doctor I take this tablet from 1st day of my menstrual cycle and not from the 3rd day. There are no side effects which I face. But from the last 2 cycles I feel cramps and brownish discharge which stains my undergarments little bit by the time I am left out with 5 to 6 tablets from the strip. My thighs and lower body feels heavy and i feel cramps sometimes on the lower abdomen. Even while i am on the 3rd strip and only 6 tablets are left I am getting brownish discharge which stains my undergarments. This is not a constant flow but I feel sometimes i get this discharge. I get cramps when i eat lemon juice or orange Is this something which is normal or I need to see a doctor? PLEASE help!!