Suggest Treatment For Irregular Periods

dear dr my name is tracey im 29 yrs old i have been havin problems with my period ever since i started n it seems im not goin to be able to have kidz i want u to help me,sometime my periods come regular for awhile then it changes and it dont comes until like 3months or more and when it comes it really comes very heavy and it goes on for likes 3 weeks to a month i try to get treatment for it but it doesnt work and i want to have a baby so bad i dont know what to do if u could please give me your advise or could u tell me your location so i could come and visit......thank u