I have a recurring lipoma to my right deltoid area the size of a large grape, that has become painful (feels like my arm has the flu) in the past few weeks. I had a lipoma removed from the same place 10 years ago (when I was 14). I am scheduled for lipoma removal surgery in a few weeks. I only took 3 days off work, I'm right-handed, and a nurse. How long of a recovery period do you think I will need? Will they need to cut into my muscle?