My 4 month old Boston terrier started trying to throw up tonight, white mucus is all that would come up with hacking and gagging. After multiple spats of that, he then threw up a good size of white foam. Shortly after threw up his food. Pawing at his face, right eye red and irritated. Excessively drooling now. This started over an hour ago. He’s asleep on me now, but the drooling is still going on and you can hear it in his mouth. I was considering an ER now or in the AM?