What's worked if clomid didn't?

Amber • 30 years old. We have one daughter, born on 2/10/14. TTC #2 since December 2014. Finally pregnant with #2 due 12/4/17!
Been on 50,100,150mg of clomid. Not responding. 
What's the next step?
Anything work for you after clomid didn't?
Been trying for over a year, trying to keep hope.
Thanks!