TBI Scare - Struggling to Cope with Uncertainty

I have been trying and trying to write this blog post and every time I start to write it, I can't seem to get anywhere.  Honestly, the whole prospect of TBI has been a lot to wrap my mind around and I have been having issues with my PTSD as a result.  It scares the hell out of me. What makes it worse is that I don't even know if it IS TBI - and that's what's killing me right now.  If it's not TBI, is it because I am not getting good sleep?  Or could it be that my brain chemistry has changes drastically and my med cocktail is out of wack?  What if it's all three or none of the above?  It's driving me nuts and I haven't been able to concentrate at all.  My ability to focus has gone right out the window.

Then there's the PTSD.  As a result of all of the added uncertainty and fear, I have been struggling to keep emotionally involved with my wife and daughter.  Granted, when I start to withdraw, I have been able to catch myself and pull myself back from becoming a cave-dweller, but it scares me that this whole situation has had such an adverse effect on my ability to cope with aspects of my PTSD that I have managed very well over the past six months.

The TBI evaluation cannot happen fast enough.  It's amazing how uncertainty can throw my life into total disarray.  If anyone has any brilliant suggestions on how to work through this, I am all ears.