I went off birth control in july and have 2 periods since.. now its been 4 months and nothing. i was just tested last week for FSH, prolactin, TSH, and estradiol and everything came back fine.
Talk to your dr. If you are sure you are not o'ing, there are many meds that can stimulate it. Each woman is different as to which med they choose. Clomid is the #1 rx, Femara is 2nd. Good luck!