i am 23 yrs old.i have a problem with my periods. the mensuration period comes after a lag of three months.during these months there is no bleeding.the period starts with bleeding but the flow consists of only pieces of clot for at least a month.after which the flow starts with profuse bleeding for at least fifteen days.after which normal flow continues for ten days.and after taht starts the non mensural long period of three months again.and this cycle keeps on repeating.i went to many gynae,the USG is ok.the endocrine system is ok now but it was (hypothyriodism).no pain in legs or abdomen during period.