Sounds like you're on the downside to recovery. Take it easy and rest it's a recovery for the next few weeks.
Two years ago, I was one of those on the covid floor in the hospital and was a lucky one walking out after just five days.
The covid shot wasn't available then. The doctor told me since I'd never smoked and was healthy and in good shape meant the difference.
He also said as bad I had been when I walked in the hospital I'd have great natural immunity and would never need a covid shot.
To date I've haven't had one. Take it easy and get well.