I've just seen a post about someone who was having a horrible time with sensory overload, I'm sorry you are going through this and I sincerely hope you will be fine soon. I noticed he/she mentioned that even with eyes closed and covering ears they were still overwhelmed by the sound of their beating heart.
Now I that got me wondering, there is a particular way I have to sleep so I won't hear nor feel my heartbeat because it overwhelms me, it adds up to sensory overload, I hate the sound of my lungs feeling with air, I can never tune out of it and most of the time is like every bit of my body is a ticking clock that I can hear the tick throughout the day, joints moving/cracking, lungs, bones... I'm in a constant unpleasant orchestra that is playing inside my body but never shuts down.
I'm just wondering if that had something to do with Asperger's and sensory processing disorder or if im just a freak, if anybody has got articles or books on the subject to suggest, it'd be much appreciated.