Hello, my Guinea pig is going on 2 years old in December, but he has been sick for 73 days now. It all started with a URI, then GI stasis, bloat, diarrhea, bloat (again). Now what he is going through is something that no vet in my area can diagnose. He arches his back and whimpers when he poops. Not all the time, but mainly when we syringe feed critical care. His urine juts recently started turning a dark orange color. I know it could be oxidation but he never had it before. When he urinates there is a white spot left from where he pees. It is kinda powdery but not grainy. He seems to be happy for hours and then all the sudden he will puff up and just sit there seeming in pain. I am so lost, it’s been a very long road for recovery. I’m not losing hope on him but it seems like everyone is giving up on him. I think that if he is still here living then he wants to live and be here. Any advice would be greatly appreciated!