Went through same thing a year ago. My tumor was a little larger and grade 2 but I went with lumpectomy and sentinel nodes. They did give me Tylenol with codeine but I only used it the first day or 2. Didn’t really need it. Only pain was when wraps came off to shower (pressure bra and ace bandage) and that was alleviated with rebandaging. By 2 weeks when they started removing wraps I was fine and needed no pain meds even without the wraps.