Hi, I think you should track your ovulation by repeated ultrasound and when follicle is more than 17 to 18 mm, take injection for rupture of follicles. Be in contact with your husband every 2 to 3 days after your periods stop. It will increase chance of pregnancy. You can take naturogest from day 14 or after rupture is confirmed on ultrasound. It is a progesterone which helps in supporting the implantation. Also get a thyroid profile and prolactin level done to find out the cause of irregular periods. You may need some other treatment also if anything is abnormal. Talk to your doctor regarding this. Hope it helps.