I'm so sorry you are struggling and in so much pain.

It sounds like you are doing your best to take care of yourself.
As far as the sleeping issue goes, maybe you could ask your dr if taking some melatonin might help you get some sleep. I don't know if it would be contraindicated with your other meds or not, but it may be worth a try.
I hope too that your dr does a chest xray on you. I had bronchitis 2 months ago and it turned into pneumonia. I had some of the same symptoms as you did and didn't realize what it was until I got the xray.
When we cannot get the sleep our body needs, our body does break down and become susceptible to illness. This may be at least part of the problem you are experiencing.
I wish you luck with your dr appt. and hope you can find some rest very soon. I'll keep you in my thoughts and prayers.
Gentle *hugs*