Good morning -
Glad Denise was there with you earlier - I know exactly how you feel ...watching the clock turn until you can finally get to the vet. I am unfamiliar w/ athsma in cats, so I'll leave that to others that may be able to help.
Did he have the discomfort in his stomach at the vet on Monday? When did he stop being interested in his food? Is it possible he's not dealing well w/ the antibiotic? Just like in humans, some meds don't agree with us and they need something else.
Kim (kse) has a cat Kitty, who's had pancreatitus more than once. Her prefered antibiotic is zenniquin - it's more broad-based. Might be worth asking for it. Your cat may also need fluids. My vet did them once in the office, showing me how, and I've been giving them to Grayson once or twice a day since. Although Graysons are part of his treatment for the ketones, it is a multi-purpose treatment. It gets fluids into his system so he's not dehydrated - especially when he's not eating/drinking enough. I look at it like Gatorade - it's probably not, but you see the comparison.
You were smart not shooting. For me, initially, I did not shoot anything under 250. And when it was 251, I shot half of what I was giving him. When Grayson first started on insulin, he danced some REALLY long cycles. Like 24 hours instead of 12. It may be that your cat is adjusting to this new hormone, giving him prolonged cycles. It's nights like last night that we're so glad we're testing. I came home one night at 7 pm to shoot Grayson, and he had a 138. I retested, and it was 125. Since he'd started at 400+, I thought GEEZ, if I'd have shot blindly, I would've killed him! SOOOOOO glad you're testing!
Hopefully the two of you got some rest, and the vet will be open soon and you can be in the door. Good luck. Hopefully it will be something minimal and he'll be feeling better soon.
Lu-Ann