Switching from Femara to Clomid?

Caitlin
Has anyone had any luck switching from Femara to Clomid? I know a lot of people go from Clomid to Femara and get lucky, but what about the other way around? I have been on three rounds of Femara (2.5, 5, and 7.5 mg) and still have not ovulated, so my doctor wants me to consider switching to Clomid to see if that works. Any advice, ladies?