femara success rates

Hi all 
I had three rounds of clomoid with no success, I ovulate on my own but doc put me on clomoid to increase the chances did not help much I was still only producing one egg and only during cycle day 17 -19 which I do anyways without medicine. Now I'm put on femara this cycle want to know your experience with this. Both me and DJ are 34 have a dd 4. I have pcos and endo