Help me!

Sara

Hi, I've always had regular menstruation especially at the beginning but it hasn't been for about two years. Often my period does not come to me for two months and if it comes I have brown discharge, the periods of ovulation last three weeks and I have very intense cramps. I've never had a visit to the gynaecologist and for now I can't do it, but I was told by some friends that it could be pcos or amenorrhea. Has anyone ever had such an experience?