How Does One Control Heavy Menstruation?

Hi am a 22 year old female am fat I weight approximately 190 pound i usally have problem with my period I skip sometimes I recently got my period it was poor merely small drips per day sometime none .I did something called a filter its opens the foot pourse buy soaking the foot in warm water and cooking salt and a filter that s placed in the water which draws all the toxin n chemical out from ur body after that I ve been having heavy period and it pass 28 days and is still heavy I usally get my period for 7 days I wanna no what is wrong with me please advise me what is happening to me I am very worried .