I have had an extremely itchy rash for over two months now two different types.. 1 small red bumps the other very large with white in the middle.. Almost like a huge zit. I have taken two kinds of medicines one for staph infection along with a steroid cream and hydroxyz Pam. Last month my period was only 3 or 4 days and this month it was 12 days late and lasted 8 days. I have taken three pregnancy tests and all were negative, one being a blood one at an actual doctors office. Could these be related and what could it be?? Itching is driving me insane!