on vacation, dog is sick advice plssss

M

i left for vacation and left my dog at my new apartment (he’s spent the night once before i left) and my roommates are taking care of him. he’s a yellow lab who’s 6. there’s another dog there who a smaller dog who is also a boy, they seem to get along okay but my dog isn’t very social with other dogs. since i left my dog has been vomiting a lot. i think it might be because he’s so nervous being in a new place and he does have separation anxiety. do you think my roommates should take him to the vet? they say that he’s acting like himself and is perky and likes to go on walks still, just vomits every so often. he’s been vomiting less as the days go by? idk what to do! lmk if u have advice!