Welcome to HCM,
From your history it seems that you have not seriously try to find out the problem of having irregular period, getting weight abnormally heavy.
You require evaluation of your all these problems.
There might be possibility of having hypo thyroid and diabetes
and Gynecologist and under go various blood work, ultra sound
After all reports go for treatment advised by them accordingly.
Meanwhile reduce your weight, take low fat, low carbohydrate
Go for regular exercise like running, swimming, jogging.
Ok and bye.