"the neurosurgeon said to me that my MRI and CT scans are both clear and normal which means that my brain is healthy and injury free and that my symptoms are coming from an external source and not from my brain. I'm not sure what to think of this."

I know what I think of this. This neurosurgeon is clueless about concussions. A Diffusion Tensor Image of your brain might show something different. It won't change your need to lower stress in your life. Reducing stress is a choice that we all can make. CBT (Cognitive Behavior Therapy) can help. Each time a stressful thought comes up, we respond by saying something to over-rule that thought. The most common response could be: I just need to relax, let go and give it time.

Is you primary symptom head aches ?

If you can work through your head aches but do low stress work, time may be able to resolve them.

How much time do you spend each week:
At your job ?
Researching and posting about concussions ?
Getting quiet rest while awake ?
Sleeping ?
Doing low stress activities ?