darcy,
Welcome to NT. Sorry to hear of your struggles.
First, an MRI will not be of any value. Most neurologists are not much better. I would suggest trying to get an appointment with a physiatrist who has a good reputation with concussion. They are listed under Physical Medicine and Rehabilitation and are often associated with a Rehab Center or Hospital. You may benefit from a neuro-ophthalmologist visit. Also, a vestibular evaluation will likely help.
Unfortunately, there is rarely a single specialty that can address all of your symptoms. It is usually best to treat them individually but in a coordinated way. In other words, each clinician/therapist knows that you have other clinicians/therapists working with you. This coordination can often be handled by the Rehab department.
Regarding do it yourself therapy, You need to get good restorative sleep. If you wake up after a normal nights sleep but still feel off or quickly fatigue and feel off, you are not getting good sleep.
Limit alcohol and caffeine to one serving a day or so. Eat healthy with a focus on anti-oxidants, B-6, B-12, Omega-3's, folic acid,
Limit the chaos in your environment such as excess noise, voices, light, visual stimulation, etc. The brain needs a serious rest from stimulation. Foam ear plugs can be a big help. Break you day down into single tasks. Trying to multi-task will likely overwhelm you. If you can use lists, they may help. You may need quiet while you are working on the single task. I have found specific music styles that seem to match my brain's cadence.
You listed general symptoms. If you could be more specific about your struggles, there is likely someone who has a way to work-around or accommodate that specific symptom.
Concussion recovery is about preventing or avoiding the triggers that aggravate your symptoms. By linking together symptom free or reduced symptom days, the brain gets a chance to rest and heal. It is counter productive to try to push through your symptoms.
I have likely broken my own advice by presenting too much information for you. Sorry.
There is a very good resource at
http://www.drakecenter.com/file.axd?...vivalGuide.pdf. When you have some working brain cells, try to check it out. You can print it out for reading later. It will help you understand some of your symptoms. If you have family to help, ask them to read through it. They will likely have a number of "ah ha" moments as they recognize your symptoms. It is a great help when your family can recognize your symptoms as real and caused by your concussion.
My best to you.