Stage 1 Patient
I am about 9 weeks out of a bilateral mastectomy. The tightness has gotten better, remember to do the stretches especially in the morning when the muscles are tighter. You are ONLY 3 weeks out, you MUST take it easy and slow. Even though you are getting stronger, it does not mean you are good to go. Continue to have people help you, do things for you, YOU MUST CONTINUE TO REST.
Good luck and feel better.