IUI with letrozole? What to expect...

Hey all! I had 2 failed unmedicated IUI's so this round my doctor decided to start me on letrozole/femara (I have a high family hx of breast cancer so she said this medication would be a better choice then clomid). I start the letrozole tomorrow (day 3-7 of AF) and I'm wondering if anyone else has taken this medication and what side effects they experienced? Seems like from my research that the side effects aren't very significant but I wanted to get some advice from you ladies!