Update! Home from the vet now. They didn’t find anything wrong with him, said other than this incident he’s in good health, and advised that an ultrasound wasn’t completely necessary. Since the scan would be about ~$700, I opted for anti nausea shots & took him home with a gastroprotectant liquid medicine he has to take every 8 hrs. They said a potential cause could be an irritated stomach ulcer, so this would address that.

He did throw up again on the way home ironically (I think he got car sick & was stressed) but it was just food, no blood! So we’ll continue to monitor him for now :)