I am 20 years old am suffering from staph aureus and was put on a 7 days treatment using a drug called ceftriaxone, this is the 6th day and am still experiencing rash and having bumps on my penis. And the bumps gradually spreads to other parts of my body, the rashes is mild or stops during the day but at night is unbearable and my penis normally feels hot to touch, Pleaes help me.