Suggest Treatment For Irregular Menstrual Cycle

amaka,23, i have a problem of irregular menstral cycle for about four month now isee my menstration twice in a month in june i saw it on the 24 of june and on 7th of july i saw it again and in august on the 4th and today the 20th it started again i dont understand i need an understanding about what is happening to me,i am fat