How Should Irregular Periods And PCOS Be Treated For A Successful Pregnancy?

hi my name is rekha . i have irregular periods , am try to get pregnant am done every thing like follicular study and i did IUI but its fail what to know please tell me . i have a thyroid problem and i took eltroxin 88mgs . every time i took provera tablt to get periods . i have a pcod problem. please help me what to all those things am totally confuse