Inclusion Criteria:  Infertility lasting one year or more in presence of regular intercourse, Patients' age between 20-35years Normal semen analysis according to WHO 2010 Patent fallopian tubes (e) Normal prolactin and TSH. Anovulatory cycles confirmed by mid-luteal progesterone ≤ 3 ng/ml and Clomiphene citrate resistance for 3 cycles of 150mg.  Exclusion Criteria:  Any hormonal disturbances eg. hyperprolactinemia, Immunological causes of infertility, Coital errors, Metabolic disorders and Poor patient compliance.