First time on this. I haven't play sports in a while or done any heavy lifting. I've been doing nothing. My right upper leg near my groin area. I can feel a small ball and a lil bit bigger ball. It hurts when i walk or apply pressure on it. Im pretty sure it iisn'tsnt a std either. The difference between both of my upper part on my legs. The right one is a tiny bit slightly red and the other leg is fine no pain at all. Please help.