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It is not impossible to get pregnant if you have PCOS, provided you have no other factors affecting fertility, and provided you are on right treatment for control of PCOS. PCOS usually responds to treatment with insulin modifiers as most common cause for PCOS is insulin resistance. Consider discussing with your treating doctor/gynecologist about getting started on these along with the hormonal contraceptives for better control of PCOS and for regularization of periods. Once the ovarian changes are reversed, hormonal contraceptives can be stopped (unless you wish to continue on them for birth control purposes). If required, and once you are ready for pregnancy, ovulation inducers and HCG trigger injection can be started along with supplementation of external progesterone supplements to counter problem like LPD (luteal phase defect). If you are not successful in getting pregnant with 3-5 cycles of treatment, assisted reproductive techniques like IVF or ICSI could be helpful; in which, normal healthy sperms (from your partner) will be selected and washed to be fertilized with the egg, and then the embryos will be transferred to your womb. If you are trying for pregnancy, monitor cervical mucus changes and the BBT (basal body temperature) charting to predict your ovulation (along with the follicular study) and time your intercourse for having fruitful results. Have intercourse in positions that allow for deeper penetration for high deposit of semen. Have diet with foods rich in zinc content to ensure better maturation of egg and sperms. Take adequate rest. Drink plenty of water. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.