First, don't feel like a pest. Asking all sorts of questions is exactly what this is a high part of what WhatNext is all about!
I personally have not had cancer, so I can't speak from experience. But I can tell you that a lot of people here have asked about various issues concerning their muscles. If you see the search box above that says "people," (on the above right) click on the arrow and then click on "questions" - put muscle in the search box and you'll see all the conversations that have taken place.
Of course, you should keep your medical team posted on any changes and questions you may have.
Thanks so much,