Stress seriously magnifies concussion symptoms and prevents proper healing and recovery. Your anxiety is not uncommon. No simple concussion will ever show up on an MRI. You would need a more serious injury for the MRI to show it.

Your options are, Take time for quiet rest and recover as soon as your brain can or continue at full pace with work and school and take months to years to recover.

Water exercise can be much less stressful and jarring.

You do not say your age. Hormone changes in the teens can magnify concussion symptoms.

Minimized screen time and especially smart phone screens and texting. Too much stress.

Read the Vitamins sticky at the top. You need to help your brain tolerate stress and purge from injury and stress toxins.

My best to you.