Coping with Pain

Tried to look for a thread on this but couldn't find one. I have an abnormal pain threshold, I know this is something that can go hand in hand with ASD.

I have suffered some very serious injuries without so much as a "brofen". It has largely served me well in my sporting endeavours being able to push through the wall or what not. What I find weird though is I had for example what is known to my work colleagues as the "First blood"  incident after falling through a double glazed window, I lacerated my arm so badly colleagues ran for a second meeting with breakfast whilst I calmly stood their considered the injury and proceeded to repair it myself before a more stomach hardy colleague suggested he take me to A&E and let the professionals deal with it. 

What I find odd though is none of that kind of stuff hurts, injuries happen fairly regularly for me as someone seems to have forgotten to programme me for danger, but everyday stuff does, I find it particularly painful lying or sitting for any period of time over 10 minutes and spend much of my time with just all over dull pain? I woke last night convinced I had broken my collar bone during the night obviously I had not. 

I'm not worried it anything, it just seems weird and wondered if anyone else was the same in this respect as it's kind of difficult explaining to people because I don't know anybody the same.