I got diagnosed with a knee effusion 3 weeks ago, xrays, no arthritis . Took ibuprofin, no exercise. Swelling has gone down just a little, but it s still slightly warm, and pain in going down steps, and it s tougher now, than 3 wks ago, to take the weight on it when going down steps. It feels like my upper leg is getting all tense. Do I need to go back to doctor, consider aspiration, consider other measures?