More symptoms

I wrote last week about my 11 month old border collie. She had symptoms of pancreatitis a month ago recovered then they came back after a ct scan. I took her to the vets last Tuesday blood tests said pancreatitis but they also feel it isn't the primary cause her fever is up, elevated white bloods. Given synulox and metrocare Her symptoms then were bloody diarrhea, abdominal pain, lethargy All these symptoms gradually improved Took her back Friday and fever was up, despite symptoms improving and 3 days antibiotics. She was hospitalised friday and Saturday given urine test, more bloods, ultrasound(all fine) her fever ping pongs up and down. She was sent home Saturday with double dose of same antibiotics. Then Sunday her poo has finally stopped having blood in it but now she's got a hacking cough brining up white/clear mucus made worse by activity and her eye is squinting with third eye lid inflamed. She's still lethargic and poo not perfect. I'll take her back vets today but im just at a loss what else can be causing this and what tests are worth doing now? She's had so many. I just don't understand why original symptoms improved to be replaced by new ones

Just to add in 7 days shes only eaten a very low fat diet. Either sweet potato and chicken or a veterinary low fat food.  

Hello again - I think at this point, your vets are in a position to know better than me.  They have, after all, seen the scan and the bloods.  From here for example, I am in no position to rule out pancreatitis as a main cause, having seen dogs with pancreatitis with fever.  Is there actual evidence of a bacterial infection?   Because your vet can see more than I can, suggestions are best coming from them now.  Good questions might be:  could a biopsy be benefitical?  Have pain killers been tried?  Might cancer be a on the list?  What differentials could explain everything you can see (more than one route cause, as they say, is always a strong option) including the blood and the eye.  As a vet, if I am ever stuck with a medical case, I will often call a pathologist.  Pathologists get to know about the 'interesting cases' from a large nunber of surgeries and are often good people to say 'those signs / dog that age / presenting like this / here's what's most likely / here's the best test.' I hope that you get to the bottom of this interesting case.

Thanks for the reply, you're right it's bit too complicated for here. I've been back this morning they've repeated bloods and looking to do ct scan

They're current thinking is a partial blockage somewhere