4 1/2 days post op -- achy

Hi everyone. This is my first post here. I am 37 and had a subtotal laparoscopic hysterectomy (everything but the cervix was taken) on 2/7. I feel better today than I have, hurts a little to walk, sneeze, cough,etc, but the gas pains are minimal. However, for the last 2 1/2 days I've had a tremendous amount of pain in my right knee. So intense that it is keeping me awake and when I am able to fall asleep it's not for long. I've taken as much pain meds as allowed and it hasn't touched it. Has anyone else had anything similar? I would feel so much better and recovery would be easier if this wasn't happening. Very frustrated. I have had a couple emotional swings but nothing too severe. Thanks ladies