180 patients were divided into 3 equal groups. 60 received Clomiphene 50mg twice per day from day 3 for 5 days, 60 received HMG every other day starting from the 3rd day of the cycle and 60 received Clomiphene 50mg twice per day from 3 day for 5 days and HMG daily starting from the 6th day of the cycle. Transvaginal Doppler was used for sub-endometrial and peri-follicular blood when follicles are mature. 21 patients got pregnant (11.7%) and was lowest in clomiphene group but not significant (p = 0.191). Sub-endometrial blood flow was detected in 65% of cases and not associated with pregnancy (p = 0.469) and RI was not significantly different between pregnant and non-pregnant (p = 0.208) and in medications significantly higher in the clomiphene group. Mean perifollicular RI was significantly lower in pregnant group (p = 0.033) and in medications lower in combined group and highest in clomiphene group (p = 0.001).