I think you should see an allergist ASAP. Mine was going to keep me on steriods until the Humira stopped (see my previous post above). I am concerned this could go on for a while for you if Remi stays in the body for weeks!!
Get your doc or ER doc to make an immediate appointment with an allergist -- or just call and tell them you are coming in now. If you are covered in hives, I think they will see you!