Welcome to NeuroTalk! This is definitely a place where you can "vent" and people will understand what you're talking about and offer you some support.

It sounds like you did get a concussion in that accident and are recovering from its effects still. I suggest that you do talk to your doctor about it... but you're right, there's not a whole lot they can really do for you. But getting it recorded is very important. And you might benefit from speech therapy (which helps improve cognitive functioning after a concussion, it's not only used for "speech" related issues), or some other kind of therapy.

You can still make a full recovery.

There are is a lot of advice on this forum on how to maximize your recovery and how to cope with newfound impairments and deficits.

Do you have an attorney? Since you were in an auto accident that wasn't your fault and you're still affected by the injuries from it, you might be entitled to some kind of compensation. Make sure you have an attorney who understands mTBI. Or tell your attorney what you've told us if you already have one.