Dear Nutan, thanks for posting the query. As I do not have your entire medical history and your test reports it is difficult to answer your question satisfactorily. Sometimes it takes time for your ovaries to come back to its original self after being subjected to stimulation using gonadotropin drugs. Having said that, it is important to evaluate why you didn t get your periods after ivf. The reasons why you didn t ovulate could be many. Excessive stress due to ivf process can have inhibitory effect on ovulation and so is excessive physical exercise and poor nutrition. Other reasons could be thyroid or prolactin hormone abnormalities, polycystic ovaries, poor ovarian reserve, or defects in the endometrium ( adhesions and synechae due to infection) or very very rarely due to malignancies and conditions. Like Cushing syndrome or CAH ( congenital adrenal hyperplasia) and many others which is highly unlikely in your case. You must understand that ovulation , though looks like a simple process , is a very complicated endocrinal orchestra played by hormones, receptors and many other small molecules and a slightest defect anywhere can disrupt the ovulatory process. I have laid down only general causes of ovulatory dysfunction as I don t have complete information and further evaluation has to be carried out by your doctor. Hope this helps. Good luck!