I had a crash in a group ride. Someone at the front braked suddenly on a descent. I woke up after being out for 20 min with a bunch of people standing around me, covered with my blood.

The ER did an MRI and let me go that afternoon. I was able to drive back home but I got a ride to the dentist who kneeled on my chest to pull my smashed-in teeth back out.

The I slept for most of the next two days. I worked from home the next day but was only functional for about half of that, got a bunch of root canals done the next day and slept all afternoon, and went to work the next day.

For the next couple of weeks I wasn't quite myself and I slept a lot. But it got better. Sleep is the best thing for a concussion. A visit to the doctor before your appointment (or just a phone call) might be a good idea.

Your wife is worried about you but she should back off and let you recover.