So sorry you are going thru this pain, @Not_good_63_57 .... I am hoping some of those on the same drugs may be able to give you some tips on controlling it xx
Have you spoken with your Breast Care Nurse, or your oncologist - or even the Oncology nurses? They often have good tips. How long til your next Onc appointment? It needs to be addressed.
Letrozole definitely can contribute to leg pain ..... but taking pain killers, you have to be careful to take them with food, so they don't affect your tummy xx
Take care & I hope you can get some help soon xx