my dog sick

he ate a little bit today and seemed like he was doing fine. about an hour ago he started shaking and drooling a little so we got him to drink thinking he was dehydrated. he threw it all up (big mess) hes still shaking but it doesn't seem as bad. hes half st bernard the other half is yellow lab and german shepard. we called the vet and he said he should be okay but im such a mom and still worried. has anyone dealt with this before, what should i do?

Oh, I'm sorry. I haven't checked this site in sooooo long since we're not active anymore. I hope things turned out okay?