Irregular periods. What to do?

I was on contraceptives for pcod for a period of 3 months after which I was suggested to take Cystelia M tabs for a month (vitamins). After the contraceptives, the periods occurred well in time. On the 4th month as well the periods were regular. I abstained from junk and alcohol and managed to reduce 3 kgs in 3 months. I have gained again and my period flow was really heavy in the 4th month. It lasted for almost a week. I masturbated on the last day to see if the previous problem of blood upon masturbation was occurring again or not. It did. The cum was full in blood and there were clots of blood in the cum. The periods didn't occur the next day. I started going out very often and had alcohol twice within 4 days (beers). I'm experiencing irregular periods again. There is a slight discharge on every 3rd day since the last periods, within say 10 days of the last day of period. I don't feel that hungry and loose focus very easily these days. Cum also smells like yolk. What to do?