Dr i am getting regular periods and it will last 3 days, have little pcos also.now in ttc from last 4 months, dr gave me fertab 50mg, uses, effects?

Clomifene: Before trying clomiphene, women with polycystic ovary syndrome (PCOS) who are overweight are advised to lower their body mass index (BMI) with diet and exercise. Reaching a healthy weight can restart ovulation. If that isn't successful, using medicine to correct insulin metabolism may start ovulation. If not, a combination of medicines may help stimulate ovulation.