HSG sooon

Am
Getting my HSG done as soon as my periods start 😬 Hopefully everything goes weell 🙏🏻
3 clomid rounds unsuccessful!
Fertility doctor wants me to start on Letrozole 😬😬 instead of clomid 😬😬 
Does anyone have success stories with Letrozole?? The doctor told me this have better success rates then clomid 🤔🤔