These symptoms can all be GAD, General Anxiety Disorder on top of PCS. Either way, you should seek counseling. I also suggest you try the brain nutrition regimen, especially the B-12, and L-Tryptophan. Your stress levels sound high.

Living with PCS and GAD means we need to seriously moderate our stress levels, far beyond the needs of an uninjured brain. I wonder if general stress management techniques are enough. I think we need to accept that we may need to avoid some stressors rather than try to manage them.