My right knee is swollen and is very warm to the touch and has been for several weeks. It is getting worse and pain is increasing. I can not bend it and it feels like it is going to give away when I walk on it. I have RA, but have never had a problem with the knees. I can feel fluid on the outer side and in the back. It is swollen about 3 inches above the knee. I have tried ice and heat and aleeve for almost a week, and nothing is making the swelling go down. It is not quite as swollen when I wake up, but within an hour or so, it starts swelling again. Please advise me on what to do. I recently had shoulder surgery on my rotator cuff. Dont know if that has a bearing on this or not.