

Took my cat to the vet, unclear diagnosis-will be going back, hoping for vet opinion here
She’s 6 years old, always been very healthy, is my therapy cat- she hasn’t been spayed and plan on getting it done ASAP whether or not it’s pyometra &of course know should’ve gotten it done years ago, got her as a kitten during the pandemic which was initially why didn’t get it done sooner. Her heats have always been mild, never problematic and although I know it’s best to get spayed(only cat I’ve never gotten fixed) Her mom was the same and she didn’t have her until she was 10 years old.
Anyways about 12 days ago I took her in because she was having blood tinged clear discharge, never had before and know cats aren’t supposed to bleed at all. I suspected open pyometra. They did ultrasound and urinalysis, neither gave a definitive diagnosis. Ultrasound showed she has a small bladder, hard to identify what else was showing up. Urinalysis didn’t show any infection but in their words ‘looked really weird’ Sent us home with antibiotics anyways. Didn’t suggest/push to get spayed. Has been acting mostly normal, at worst besides blood in discharge- she didn’t want other cats near her for a few days but no hiding or issues with eating/drinking/using box and doesn’t seem to be having discharge any more. Staying close, likes pressure on her belly and feel like she’s purring thru any pain/discomfort but always been a big purrer. Aware cats try to hide their pain, been keeping her comfortable and monitoring for changes.
Wish the vet was able to give more diagnosis/advice. Know pyometra is treatable, they said worst case scenario cancer- if it is cancer, wouldn’t spaying only help if it’s not spread past reproductive organs&would think a tumor would’ve shown up on ultrasound? Obviously taking her back in, just hoping for vet advice- maybe someone’s dealt with a similar case?
Don’t need to be told she should’ve already been spayed, hoping for actual advice/opinion on what symptoms suggest with the inconclusive tests. Thanks in advance.