Suggest Treatment For Irregular Periods And Infertility

hi i am 32 yrs my weight is 136 and height is 5feet1 inch my problem is that i don't have period as all young lady should i went to numerous gynaecologist but my problem still lies with me one put me on birth control which help to have period but i do want a baby an that is useless doc i am getting old and do need a child then he prescribe chlomofine that still do not help .three weeks ago one prescribe metformin still do not have a period and still taking it. doc i am worried