Constipated Uromastyx

[Pookie]

I've had my Uro for about 8 years now and haven't had any problems. Lately I've noticed that he hasn't been pooping and his stomach looks really bloated. He's still eating & is alert but when he tries to poop he really struggles for about 5 min before giving up (poor guy!). I've given him some warm baths but still nothing.

I brought him to the vet and they did an xray and it appeared that he didn't have any foreign object in there but was really backed up & looked dehydrated. They gave him some fluids & an enema 2 days ago but still nothing. The other weird part is that he's only bloated on his left side & the x-ray showed his intestine only on his left side.

Thoughts? Suggestions? Anything would help!