Not ovulating- long cycles- clomid

I went to see my OB after having a MC in May which involved a D&C. Since May my cycles have been between 30-34 days with heavy periods. My doc did a blood test and ultrasound which showed that I didn't ovulate this cycle- and wants me to start clomid for the next cycle.  My question is - what can I expect with this medication-anyone "been there- done that" who can share their experience?  September was our first month of trying again after our loss in May.