Welcome to our cp forum!
...as I read your post, I could very well relate, as I have this same thing happen to me very once in a while. I can be laying down relaxing...surfing the web, watching Tv...and out of no where...Zap it hits! ...it onlu last a split second, and I'm greatful for that, as it is a very hard and harsh Zap....one that makes you go Ouch!..or at least holler out OH!!!!...in pain.
It can be very unerving to say the least!...but I have never been able to repeat it, by moving around a little...nor would I want to. I do get up and walk around, thinking that what ever it is....might help by adjusting my body position or activity a little.
Hopefully, it is not something serious....but it may be wise to seek medical attention from your PCD.
No one here is a Dr, so there is no way we can diagnose what may be causing this...but you can be assured...we will listen and support you. The best advice given is to seek medical attention, and have it checked out.
Good luck, and please do update us, on what you find out.
Moderator Chronic Pain Forum
Weekly Quote! "Getting over a painful experience is much like crossing monkey bars. You have to let go at some point in order to move forward."