Have What I Believe Are Hives Dud To An Allergic

have what I believe are hives dud to an allergic reaction to something, I went to the emergency room yesterday where they gave me two shots and prescribed a dosepak of methylprednisolone tablets, I awoke out my sleep itching all over my body especially at the bottoms of my legs and feet totallyuncomfoartable. should go back to the emergency room as I don't thinks the meds they gave me are working