Consider: you are very early into your situation. Sadly, you are experiencing things that are all "normal" in the processing by your brain while it sorts out what is going on with itself.

It was injured, badly enough to need a period of time to have to itself to recover and find a new balance. During which time, you will be affected with the effects it suffers through the reorganization, if it gets the chance it wants to reorganize.

That is why you hear folks here stating : Rest, back off and give Rest a chance.

How much rest is not something anyone can say offhand. That is why being under the care of someone who is very attentive to the Concussion and mTBI, and the sequellae is very important throughout the initial and continual process until you reach some recovery, before further therapies are even planned.

You should still be under a neurologist's care, with regular revisits through this initial phase (especially with new symptoms occuring), and discussing possible future plans of therapies and/or evaluations.
Or a very good Primary Care Practitioner with very good experience with concussion/mTBI patient care.