Inflammation is the most likely cause of your symptoms. While recovering from a concussion, the brain's inflammatory system is on high alert and low-force impacts can trigger the brain to pump out excessive inflammation. That inflammation is what causes the symptoms.

Anxiety is linked to brain inflammation so it may contribute to the symptoms, but it is not the main factor.

So take a double dose of Omega-3 DHA and Curcumin immediately after the event to slow the inflammation response. You can also take magnesium and melatonin at night to relax, calm your mind and sleep.