Anxiety and Fear

As I was posting to Facebook tonight I realized that for all of my attempts to write about life here on the PT ward, I have left out some of the more difficult aspects: Anxiety and fear. In my case, the anxiety hits me like a ton of bricks every night, right around 8-9pm. Makes falling asleep very difficult. It seems to center around my fear of falling asleep and not waking up for a month. Having experienced my coma for a month, I dont think this is an unreasonable fear. Things are improving bodily, with each day showing physical improvements and more control while walking and such. The fear of more surgeries and complications though hit me broadside as soon as I try to go to sleep. The upside to all the heavy duty PT is that I cant fight off sleep. I am off to zzzzs about 8pm. But on nights where the exercise has been light, or in the case of weekends, just about non-existant,... I am still wide awake till nearly midnight. Not a great way to get a good night's sleep.

I would love to find solutions to this ongoing sensation. Some part of me is thinking it could be tied to any one of the numerous meds I am taking... anti-clotting meds, zoloft (still havent gotten anything definitive about zoloft), various pain meds like fentenol (sp?), vicodin, blood thinner, blood pressure meds,... all of which have likely side effects. The question is whether that is the root cause. My suspicion is that this anxiety is pharmaceutical rather than psychological stems from the timing. 8-9pm, regardless of lighting, sounds, or visual stimuli make me think it isnt just night falling. Gotta be something more.
Ideas anyone?