Allergic reaction itching like crap?

I went to the tanning bed yesterday and the lady cleaned the bed right before I got in it. now I am having an allergic reaction to something. i think it is the cleaner she used. I have red welps and the itch like crap. I have tried benadryl and oatmeal baths. Nothing is working. Any advice on how to get the welps to go away and how to stop itching would be very helpful. Please do not harp on how bad tanning is for you I know