@bpatters or
@GuineaPigPapa (who I can't tag???), will you please change the title to Talwar's medical thread?
His meds finally shipped and should arrive tomorrow. I asked the vet for something to get him started, and we picked up some Sulfatrim. To elaborate on his diagnosis, our dr wanted to treat him as pneumonia possibly caused by bordetella. Our compounded meds are a baytril/doxy combo. Interestingly, she stated that furosemide would thicken his 'secretions' so she didn't give us any. I googled this as it was new to me, but it seems it is true that in human patients, furosemide is not recommended for pneumonia patients.
So, if he doesn't improve, I'll be back at the vet on Saturday. From there we may explore heart issues I guess. His heart was visible and the xrays were perfect aside from the fluid in his right lung.