My doctor thinks I had a delayed reaction to either the antibiotics or the pain medicine (percocet) following my partial hysterectomy surgery on July 20th. 11 days after the surgery, I had an allergic reaction to something (?). Hives, swollen eyes, intense itch and burning al over my skin. I was given a steroid shot in the ER, told to take Benadryl, and given a Medrol Pack (steroid in pill form?) 3 days into the treatment, the rash/hives is worse, and the intense burning and itching is back after it seemed to be clearing up the day following the trip to the ER. Do I need to see my doctor again for another shot?