Femara

I have posted about my journey with Clomid. My doc changed me to Femara after 2 failed cycles on Clomid. I just took my last Provera so my period will start this cycle. Then I start taking Femara on CD3. I’m excited he switched me to another med but I’m still concerned as to why I’m still not ovulating. Has anyone has success taking Femara versus Clomid? My blood work is showing that my Progesterone is a .25 the first cycle in Clomid and a .10 the second cycle. I feel I have low progesterone. Is this common? I know there are injections to raise levels.