Hello, well from the history you have given, first of all the cause of irregular bleeding has to be recognised. ..well polycystic ovarian syndrome
(PCOD) is the commonest cause of irregular periods
at this age group which is associated with increasing weight also.......A detail history and an examination is required before coming to a conclusion. ....Reduction of weight is very essential along with hormonal
supplementation to regularise your cycle. .....increase fat will cause peripheral conversion of androgen to oestrogen, will cause irregular cycles and also in future may lead to metabolic syndrome
...hope i was helpful to you. ...