Uff da. Ow ow ow.

As for tiredness ... I'm not a medical expert, just an ol' lady. But to me, good sense says that especially if you're healing fast enough to impress your doctor, your body's working hard at doing that job. It'll need rest. There's also always a bit of emotional trauma, stands to reason, when you take a sudden dive over the handlebars. That has to be a nasty surprise to body and psyche. So if your body tells you to take a nap now and then these days, I'd say pamper it for now and show it you're grateful for its resilience and healing power. It'll be grateful back to you later.

Best wishes for a speedy recovery!