you could have your vet check it out and express the glands for you.
Maybe your dog was spooked by something during boarding? I can only guess --- hoping your doggus feels better soon. In the meanwhile, extra TLC for him.:)
I wish I had called the groomer before I took him to the vet yesterday. I guess I could take him back again, although there's a $50 office visit fee.
If he felt back there yesterday, could he have felt that they were full? I'm just thinking that he was VERY thorough in the exam so I'm surprised he wouldn't have thought to express them if he thought that was the issue.