Hi, I recently discovered purple stretch-mark like indentions on my inner thighs. I am 5 foot 3 inches and weigh about 100 lbs. I m also in pretty good shape. There is no pain in them but some of them are very noticeable. They range from about teeny tiny little lines to about half the size of my pinky. I also have not get bad and have no fever recently. Any ideas what this could be? Thanks!!