Glad you got to the vet, but like you, I cannot understand that arthritis would show itself like this and so suddenly too. Here in the UK we have the PDSA for people with little or no money, do you have an equivalent over there I wonder?

If you haven't opened the worming treatment, I'd be inclined to take that back and get your money refunded, it's not imperative (or is it?) at this moment in time, so you could do with that money back to help you with the rest.

See how your little dog goes on the current medication he's given you, and if he improves tremendously, then I feel, there's no need for any more bloodwork, it was probably a strain and hopefully, he'll be fine from then on.

As for the teeth cleaning, that's not imperative either is it? I think this particular vet is trying to bleed you dry isn't he! Have you explained to him that you have no insurance, and very little funds, and he should back off a tad!

Good luck with your boy, and how is he today after some medication then. Did he give him a jab to help with the pain?