Clomid and Letrozole fails :(

I was completely unresponsive to Clomid at all dosages and didn't ovulate. I have PCOS. My progesterone wasn't even above 0.8 on those dosages. My RE put me on Letrozole 2.5 mg this month and my largest follicle was only 9.2 (I've had 2 ultrasounds to check for any development to see if they'll get bigger. Didn't happen.). Has anyone been in a similar situation? Any encouragement out there?