Dear Doctors, TBI? DO AN MRI!!

So there are many things that many people don't seem to understand about my situation, including and most damaging, the medical providers. Here is the main thing:
I am still trying to piece together what really happened to me. What really happened to my brain and when.
Some people seem to think the "what really happened and when" doesn't or shouldn't matter. They think I need to look at it as "this is the brain injury you have, so now you deal with it."
Well, I am trying to. You would think that much would be obvious.
But even so, I sometimes feel very angry that they expect me to just accept that "we don't know" because the reality of the "we don't know" is that WE COULD HAVE KNOWN. We could have known exactly what the damage was from if they had done an MRI immediately after the car accident. We could have possibly known if the next two doctors I saw about it had ordered an MRI. And AND this is really kind of a big deal, WE SHOULD HAVE KNOWN right away because the fact that I have permanent scaring suggests I was at very high risk for complications that were not being monitored.  Dr. Reddy (Concussion Dr. at the Neuroscience Institute) was wrong to not order an MRI herself even though it had been 4 months since the car accident before I could get to her, but she was right about one thing: I should not have been working (which led to my being fired from that job in a very unfair and traumatic way).
And honestly this is as far as I go tonight... I am tired of trying to figure it out and what to do about it and yet it seems so very important to figure out.
Soooo many things could have been prevented if that first doctor at the North Ogden IHC Instacare would have ordered an MRI... Actually, maybe first fail was with the ENT ambulance drivers that gave me the option to go in the ambulance or not. Don't expect a person who was clearly hit in the head, is overly emotional, confused, and is struggling to make a decisions, to make the decision about whether or not they should be taken to the hospital to have their head checked out.
And if you or anyone you know is ever in this predicament, please get your head checked out!