For as long as I've been alive, if I hold my pee (not going to the bathroom), it burns. Or sometimes even if I don't. It is really uncomfertible, and lasts up to an hour after urination. It's usually yellow as well. About 5 seconds after urainating, I feel like I have to get the rest of it out, and it hurts, but I can't go. It goes in cycles over 10 seconds to hurting, and normal.