My pup milly is in the vets clinic , she started vomiting 3 days ago and became listless and sad. She is on antibiotics , and a drip. Has had antivenin for a brown snake bite , tick elixer, bloods show no toxins, negative parvo result, x-ray shows a tiny white fleck in her tummy that could possibly be sonething she ate, but it is passing through her , is now at her bowel end. She is now drooling heaps as her jowls are all drooping. Still dry heaving and
Very sad :( any ideas? The vet and I are baffled by her symptoms

Try running the parvo test again.

Sometimes the parvo test can give you a false positive.

Or.. your pup could have parvo, but the stronger strain that the parvo tests can't read.

There are other bacterial infections that can cause your puppy to be sick such as Campylobactor. It can give the same symptoms as parvo.

Keeping her on fluids is the best thing right now.

Did she actually get bitten by a brown snake? Or is that just an assumption? Did she receive the tick elixer? I would think that's odd for a vet to give those medicines without confirming that they actually happened.

She's drooling due to nausea. If you constantly felt like you were going to vomit, you'd be drooling too.

Maybe have your vet contact a specialty center with her symptoms.

Thank you for your answers , unfortunately my milly passed away last night :( I am very devastated as she was only 6months old.

I'm so sorry to hear that :-(