Hi, I had a mastectomy and sentinel node biopsy 2 weeks ago (unsure yet how many lymph nodes were removed until I see surgeon on 21.3.24) and I had my drain removed a week ago and was at that point passing 70ml fluid in 24hrs. The pain under my arm is getting worse and I can see the fluid is building up. My wound is fine but is the pain being caused from the surgery or the fluid build up and does the fluid need draining? I have a high tolerance to pain but this is causing restriction of exercises and keeps me awake. Many thanks, Louise