After a while, the ER doc had a largish portable xray scanner wheeled in to scan my lungs. The results were immediate. He recommended that I immediately receive a bag of IV monoclonal antibody treatment. I agreed, and after another few hours, I began to feel much better. Still weak and exhausted, but nowhere nearly as bad. Just getting rehydrated probably had more to do with that. Doc released me after 10 hours or so with instructions to stay hydrated and to pound down nutrition, in his words, "even if it felt like eating bricks." Soup and protein shakes were all I could manage.
I was starting to come around when my wife began to look bad. I had gotten a BPO meter off Amazon once I came home from the hospital. Her results were alarming. Called the local ambulance service and got her to the hospital where she spent the next 5 days. They treated her with remdesivir which brought her around. Fortunately, there were none of the reported adverse effects.
We are ok now, but we both experienced weakness and brain fog for a couple of months afterward. Neither of us feels like we're back to 100%, even now. But neither of us took the kill shots, either.
You most likely had delta which was worse than either the original strain or omicron, both of which I had. Glad to hear you got through it!
Unfortunately monoclonal antibodies do not work with the newest COVID variants.