Letrozole and depression

I am wondering if anyone else has experience depression while on letrozole. 

I have a history of anxiety and depression. I have been on the fertility train for about a year now. I was on letrozole for 2 months and was undergoing IUI's and got pregnant in February. Unfortunately, I had a missed miscarriage in May. I have been back on Letrozole since June and have had 2 IUI's since the miscarriage. I am finding myself to be very emotional and depressed. I cry at anything and everything. I am wondering if his is my underlying depression and the grief from the miscarriage or if this is from the Letrozole. I appreciate any feedback from others on Letrozole. Thanks in advance.