I think you should be okay flying but give yourself plenty of time to get through airport and bank in some time when you arrive to rest - don’t count on feeling up to doing things right away after!

I have had post-concussion syndrome for almost 6 months now, and I flew for the first time a few weeks ago. I was mostly nervous about the change in pressure messing with my vestibular system, as I have some inner ear damage. I’d recommend getting a pair of EarPlanes before you go - they are ear plugs that have a filter to regulate your ear pressure. I used them one way on the flight and didn’t use them the other way, and I wearing them definitely reduced symptoms of earaches, dizziness, and headaches from pressure equilibrium change.

Best of luck!!