Thanks for that info, it is difficult when you are at vets to take everything in especially with unwanted news
Septrin is an antibiotic, Is she on any pain relief? Metacam/loxicom would be the thing i'd be expecting.
Bulging eyes can be caused by tumours, retrobulbar abscess to name a few conditions, did they do xrays? that would hopefully show the cause of the eye issue.
You have a highly recommended vet in your area by looks of it
Goddard Veterinary Group
Anne O'Meara
150 Kingston Road
Elwell
Surrey, KT17 2ET
020 8393 6049
You piggy if not on pain medication at the moment needs to be on it ASAP if she is on it - then the dose needs monitoring to make sure she is being kept pain free, there are a few options normally metacam with increasing dose range and then adding in an opiate too.
She eating veg and hay okay?
Ovarian Cysts are not life threatening and can be treated by various things such as Hormone Injections by some vets. The bulging eye and Kidney is a cause for concern and the causes need to be found.
It may be that palliative care keeping your piggy pain free until you have to help her across the Rainbow Bridge is the only thing you can do, if this is the case then keeping her pain free and a high quality of life until the time comes is vital.
i know it is difficult we have had 6 piggies PTS over the years and we had to make the choice twice when it could have gone on longer, it is an agonsiing choice to have to make but one we always make out of love for our pets by putting their needs first, you know when it is time. Your vet should and will be able to guide you on it, but you know best. Have a read of this thread here