Suggest Medication For Blurred Vision And Rashes All Over The Body After Smoking Marijuana

my brother was smoking marijuana right next to me Sat. night and by the time I realized it I had a contact high. it blurred my vision, reduced the feeling in my arms so that I burned myself with a cigarette, made me hallucinate, and then the next morning, Sunday, I started developing a raised and terribly itchy rash all over my body. From my scalp and face, to my fingers, knees, toes, everywhere. When I scratch the rash it leaves streaks of rash behind. Then Sunday night my left cheek started going numb as if I had been shot with a couple doses of novicaine. Today, Wednesday, my right cheek is starting to go numb. Please, please tell me what this is! It's awful! Thank you so much!