I have a warm sensation in my upper right back, about 4 inches above my hip. It s not painful, more of a discomfort. My left side feel fine. When I have to go to the bathroom, the discomfot increases but reduces once I relieve myself. I am 18 months removed from testicular cancer, but that was on my left side. I had a second surgery to remove lymph nodes to be tested, and all of my lymph nodes came back negative. I have already made a Drs appt, just looking for some peace of mind. I know Drs hate to speculate, but I will not take any response as written in stone . Thank you.