Thank you everyone who has wished Bigwig well
She's back home, I've had her in her crate for a couple of hours incase she wanted to go off and sit somewhere away from her food/water and so far she's eating hay and veg.
The vet said he was surprised about the nasal discharge as there's none externally and I haven't noticed any at all, could be caused by an infection so we'll see what the swan results are
Things did sound more positive on discharge.
My partner wants to contact our original vets about the missed lump on the X ray, the vet showed me the X ray they did and it's clearly a bright white circle which he said obviously should not be there and her breathing is poor whereas every time we took her to her regular vets they said breathing fine. We also kept having to ask for medication and take her back several times to get any, was just getting one off injections for 3 days then following the X ray was told it's not needed.
I don't necessarily want to complain, I appreciate rabbits are tricky and I don't want to upset the vet but I do feel disappointed her breathing was never acknowledged and the lump was missed??