Hi, today I am experiencing left knee pain and like the leg wants to give way when walking. When sitting, I feel bubbling and/or gurgling in the area between the left thigh and pelvis. This past summer I experienced pain in my left thigh and leg and the ER did heart work up, CT scans, and X-rays. They didn't find anything. However, now I am worried it may be a clot. Any at home things to do before primary care call in tomorrow?