9 weeks post op BBL, knees are swollen and have a fever. Doctor says it will heal, but it hasn't. Advice? (photos)

BBL 9 weeks ago, one areas doctor pulled fat from was my knees. All areas he pulled fat from have healed & swelling has gone down, EXCEPT my knees & left one bad. Looks like fluid is trapped, skin keeps drawing up & wrinkled & is creeping up my thigh. I have been having Lymphatic massages, wearing compression socks, (over knees and thighs), rubbing coconut oil on daily and elevating my legs. Nothing. Doctor says will heal but not. Need advise.