Pukey puppy

For the last 20 minutes of this morning's walk Jake was unhappy, whether it was a stomach ache that suddenly developed or something he found during the walk I don't know, but there was vomit...I'd thought to take him to the vet if there was no change/a change for the worse, but he seems brighter, not his usual self, but he bothered the post lady for a treat and has just taken himself upstairs to find Lmb.