I Am 25 Years Old 5 Feet 3 Inches In

I am 25 years old 5 feet 3 inches in height and weight 78 kg I have lots of abdominal fat I am suffering from PCOD I had my period in February but did not had it in March in April I had some physical relationship with my husband having intercourse two three four times but after that I had a normal period but in may I am not having any period so what should I do now I I consume obimet SR 500 and folvite which my gynaecologist justice and also my gynaecologist suggested regular exercise as I am overweight