Guilty for being on sick leave

Here’s is my model:
C: I got a surgery and needed to take 4 weeks off work. I m not healed yet and need to take a 5th week. In the middle of my sick leave my boss told me I got a raise despite covid for the hard work I did
T: if I take the 5th week off my boss will think that I’m lazy and that he should not have gotten me the raise
F: guilty, I feel I don’t deserve the raise and I should not be sick
A: Buffering and not daring to call my boss to tell him I need one more week
R: calling my boss on the last day and maybe having him upset because I should have told him earlier …