Thanks for al the suggestions. We did another physical and panel of tests since its been awhile since the last were rrun and he seems to have gotten a little worse. Full blood work up, urinalysis, fecal, radiographs (chest & abdomen)all revealed nothing. I was planning on neutering him this summer anyways as he doesn't show anymore because he hates it. We are probably going to move on to a specialist but will have some decisions to make as the quote for just the MRI was $3,000. Not writing it off but cost is definitely a factor, sorry if you don't like hearing that. He overall just seems very anxious about things/life in general.

Hey, I get it. Vet bills these days can be as high as humans. Have you thought of insurance? Care credit etc. then you can pay on time if need be. Good luck with your boy.