My dog just got his distemper shot, about 5 hours later he is acting like he is on something. He's flying around the room with his touge out panting, rubbing his face. His face did swell up but looks better. Last year he had received the same shot and had somewhat of the same reactions. He has thrown up twice. Should I take him to the emergency room, or could I wait till morning?

He is quite likely having an allergic or adverse reaction to the shot. Call your emerg vet asap! These are danger signs!