Polycystic ovary syndrome (PCOS) is found in 5% to 6% of women of reproductive age. It affects women's reproductive capability; thus patients have risks of infertility, miscarriage, and complicated pregnancy. A study revealed that the prevalence of oligoovulation or anovulation in patients with PCOS ranged from 65% to 80%. Anti-Mullerian Hormone (AMH) is an important regulator in the ovary that play a rule during development and function. It is suspected to affect clomiphene citrate (cc) resistance. In this study the investigator will assess the accuracy of AMH prediction of response to cc in women with PCOS.