Dalton,

Welcome to NeuroTalk. Sorry to hear of your recent experiences.

What you describe all can be due to a concussion. Add a predisposition to anxiety and you get a double whammy.

The concussion was on the basketball court. The snowboarding added to the concussion with sub-concussive impacts. Any time a concussed brain is shaken, it can act like a new concussion and make the symptoms worse.

To define you, I'd call you a cyber-chondriac. That is a hypochondriac who self-diagnoses from online (cyber) information.

A brain tumor will usually manifest with focal symptoms related to the specific area of the tumor. Your symptoms sound more global as in diffuse axonal injury. This is a subtle injury or stress to thousands of fine connections between brain cells.

I assume that your are a guy (Dalton) but your age may also play a part in your symptoms.
How old are you?
Have you played any contact sports or soccer?
Any prior concussions?

And, forget about the brain tumor. You are more likely to get struck by lightning than have a brain tumor from the symptoms you describe.

Anxiety is the enemy when recovering from a concussion. You need help with your anxiety besides the Xanax. I am concerned that you are taking a benzo (Xanax) while trying to recover from a brain injury. Your brain is already struggling and sedating your brain will not help it heal.

Do you drink any caffeinated drinks? coffee, tea, energy drinks?

You need to stop if you do.

Keep us informed how you are doing. We are here for you.

My best to you.