Stress caused ?

While it can itch right before a outbreak, it isn't only while wearing certain things. It would be an almost constant itch no matter what you wear before the outbreak is going to happen. And isn't so much of a bump as it is a lesion; it would hurt or burn when touched or if urine touched it. If the bumps you have don't hurt at all, then it probably isn't . That being said, you should still get it checked out. Whatever it is, it would be best to get treated as soon as possible. Best of luck, I hope everything works out for you!