I know I'm going to say what other people will say as well-but you need to rest. Not just physically, but mentally too. It takes time (and I hate to hear the DR say it)-but you do need to ask your Dr about the concussion and PCS.

I was in an accident in July-looks like same time frame as you. I'm an adult college student-I had to take off the fall semester. One, I wasn't allowed to drive, but two, there is no way I would have had the patience, the stamina, the anything to handle classes. I've had some time to rest and start to recover.

Read about PCS (post concussive syndrome). I have the feeling you'll be shaking your head yes...a lot.

Good luck on your recovery!!!