I have been having pain in the back of my right knee area, more in the area above the joint, rather than the joint itself. The area is covered with multiple broken blood vessels, and is relatively black all the time. It has been really uncomfortable for the last few days. I have also been having muscle cramping in that leg and buttocks. I am a 52 year old overweight female, with no history of high blood pressure, diabetes, or other chronic health conditions. I have a job where I stand for several hours at a time. I also work out 4 times weekly.