Hello, and thanks for your question about BB.
It sounds, from your description, like she might have had an upper respiratory infection a month ago, which is viral, like the human cold, but many vets will prescribe an antibiotic to try to prevent secondary infections. it's also possible that she has the feline herpes virus (FHV-1), which is not related to the human herpes virus. This causes the same upper respiratory symptoms and eye infections, as URI's. Giving her some Lysine may help. They make special formulations for cats:
The rattling sound you hear in her chest over the past several days, may indicate that the URI has moved down into her chest and/or she may have developed bronchitis or feline asthma. Listen to her chest with your ear and see if you hear any wheezing upon exhale. That would indicate asthma.
I realize the vet bills are getting expensive, but she may have a bronchial or lung infection (pneumonia) which needs to be diagnosed in person. A chest x-ray may be necessary and then she will be prescribed the most appropriate medication.
For the moment, you can run a humidifier in the rooms she occupies most, and this may help with congestion.
I'm sure you prefer your own vet, but if there's a VCA Animal Hospital near you (they're nationwide), they offer a downloadable coupon for a free first visit for new patients:
At least this will cover the office visit, but any imaging or medication will be extra.
I hope all will be well with BB!
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