Noticed a rash on his neck the other morning when he woke up, and noticed that he had red bumps all over his body (head to toe, on his back and belly, legs, and face). He just got his Combo 5 Way shot on Monday, this was noticed on Thursday morning. Also, right when he woke up that morning he threw up. His behavior is normal and has shown no signs of being sick, other than throwing up that morning and the rash. We're going to go see the vet tomorrow, has anyone seen anything like this?