I'm 22+ 2. I have this one area on my leg, under my knee and a little closer to the inside, that is super painful to touch. I noticed it last night when I laid down and my other knee bumped it. It looks slightly swollen, but no bruising. I know I didn't hit my leg on anything. Could this be the start of a varicose vein? Should I call the doc? It doesn't hurt to walk or anything just when something touches it.