Suggest Treatment For Irregular Menstrual Periods

I am 26 years old. I usually have irregular periods even before marriage. But after marriage, for the past 1 year it was very much regular. But for the last 4 months, it is irregular again. I didn't have menstrual period on April and May(my last cycle was on March 22). But from 23 May to till date I have bleeding, that too regular flow. I am very bothered and concerned. I have shifted to Singapore from India. Since I do not know any doctors here personally, I am searching for the right doctor to consult.