No matter what it turns out to be, it is important to get it looked at to possibly get help with it, to ease your symptoms, and make things more comfortable if at all possible. I would not feel the least bit of embarrassment to get help no matter what I thought it was, it is important to find out what it is and to get the help you need and deserve.
Shingles or contact dermatitis can be very painful, irritating, and annoying. You have my sympathies especially with what you are describing for this rash

. It is not worth wondering what it is but to find some relief for either or if it is something else. I would contact my doc if I were you. I hope you find some answers soon and that there is some relief that comes with it as well. Hoping too it passes quickly no matter what it turns out to be. Hang in there. ((((Artchic528)))))