Shiloh is yelping - doesn't want to move, just wants to lay down

Not sure what is going on with Shiloh - just started in the last couple of hours.  I'm hoping he just pulled a muscle or wrenched his shoulder   when he was trying to escape through the fence.  I have gotten smart about him doing that and whenever he is out Shiloh wears his Sensation harnedd - that makes it easier for me to grab him and get him back in the yard - except I wonder if something more happened this time.  Sometimes, like if I put my arm behind his back legs to move him, when he is standing, he yelps.  Or when he got up from laying down, he mignt have been sleeping crooked or something.  He seems to be eating ok - he had already eaten his dinner but I gave him a small treat a bit ago and didn't have a problem with that.  He did go out and potty a bit ago so that is working - he did drink but not much like he usually does.  I have a 24/7 vet clinic about s block or two but the vet there has a bad rep - excessive tests(of which me and Shiloh have personal experience), surgery, was suspended for a month or two due to poor record keeping, spotty care of animals.  A few years ago Shiloh was found to have Intervertebral Disk Disease of the tailbone area along with two missing disks in the lower tailbone.  Not sure about Aspirin - have an off-brand equivalent to baby aspirin but that's it.

And since I can't drive, not sure what to do and of course it started AFTER our regular vet was closed.  A little while ago when I walked over to him he did wag his tail with no problem - no yelping.  Right now he is laying on an old dog bed I keep on the deck - it is unseasonably warm this week so I'm sure the coolness feels good since it is kinda stuffy in here.  I am hoping that in the morning he will be better, at least some.  I really don't want to take time off work so not sure what I will do about that.

This is a bit of a switch for me - asking for some of that Blogbille Power of the Paw for one of my dogs but right now, that is all that I can do for Shiloh.