starting letrozole

So round 2 on Clomid was a bust. 1) visual side effects 2) no ovulation (prog 0.8)
So, started Femara/letrozole 2.5mg x 5 days. 
Started w no period (as I didn't ovulate). So far, so good. 
No side effects as of yet. 
Praying for ovulation and a sticky bean. 
Please leave comments with your Femara stories. Good or bad.