If it were me, wolfraven, I'd be making a vet appt for him as soon as possible. This could be something serious.
I hope your pup is okay!
Please let us know what your vet says!
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."