In my opinion you are having irregular menstrual cycles and at the same time increase in the body weight and this is not the normal in healthy person. Try to go to the routine examination and find out why you are having regular menstrual cycles and why your body weight is increased. Avoid taking stress and cool and try to solve your problem and if you want any guidance you can contact me and nothing to worry this is treatable.

You should be evaluated for PCOD

I advise you to to get the Ultrasound abdomen vit d bit b12 and prolactin tests