question: I have found a small ball-shaped lump at the crease at the very top of my leg. It s under the skin and invisible, but you can,feel it when you touch the area. I m unsure as to whether it s there continually and I sometimes don t notice it, or it comes and goes. As far as I m aware, I have no STIs. I m starting to panic over what it is and am unsure whether to go to the doctors or not, plus its a little embarrassing to talk about face to face