Fwiw, you're probably getting most of the shit because of where you posted. As stressful as the situation is, the term infuriated has connotations beyond the literal meaning. Since you not only posted in a place with that in the name, but used it as a description of your emotional state, those connotations came into play.

Fury or rage, even on a mild scale, isn't really the response that's socially acceptable towards a sick dog.

Now, you probably didn't mean you are actually mad at the dog. I assumed you were mad at the situation, not the dog. It seems that other responders assumed the anger was with the dog. And there is a difference between those things.

Maybe you are actually mad at the dog, I can't say for sure either way. If that's the case, it may help if you take some time to say out loud to yourself that it isn't the dog, it's the stress and lack of sleep that you're mad at. Seriously, it will likely help.

When my little corgi love was in her last week, she was having trouble sleeping. She'd wake up and get scared if she was "alone", which just meant in her bed right beside ours, rather than with one of us camping on the floor with her. So she'd cry and whine. None of us were sleeping well, obviously. And you do get mad when you're not able to sleep right. But taking the time to remind yourself that that's what you're mad at, not the dog, it lets you keep your emotions channelled in a better way.

But, hey, you're gonna get through it. Your pup is going to get through it. When you finally get to talk to the vet (I saw your comments saying you had already called), don't be afraid to ask for something to help the little guy stay calm through his distress. No bullshit, we do it for humans already, and medication to keep the dog calm and resting will help him as much as it helps you. And it doesn't even always take super strong stuff. some dogs respond well to antihistamines in that regard. There's plenty of options available.

Believe me in this, the stress is worth it. Hold onto the knowledge that he'll be back to normal in a few weeks. You'll both get there :)