Cannabis oils is an extremely broad term. There are THC oils, CBD Oils and combination THC and CBD oils. There are properly refined and tested oils and then there is the majority that are junk. Since there are no standardized testing protocols, it is hard to trust a dispensary's claims. Be careful.

Xanax or any benzodiazepines are not a good idea. They can be OK if used at minimum doses for rescue situations. That means your mind has taken off on a panic attack and you need to get it settled down. Beta blockers like propranolol can also be a useful rescue med if you have an anxiety ridden spike in blood pressure.

I recommend you get an at home blood pressure kit so you can monitor your BP when your anxiety is high. You want to void high BP with a brain bruise or any brain injury.

You need the rest of the Bs and the anti-oxidants. Folic acid is needed for myelin sheath repair. Oxidative stress can be rough on the brain so strong dose C and 400 iu of E daily is good. The B-12 should be 1000 mcgs or more of the methyl form, not just the common cyano form.

Don't put too much faith in a neuro until he shows you he understands concussions. Most do not have a strong understanding of concussions.

Avoid caffeine or limit it to a single serving a day.

And yes, you have a concussion but also a contusion. The contusion is just a focal injury that happened during the concussion. You whole brain suffered a mild injury but one small part of your brain was injured more than the rest.