I have had this very occasionally for years, may be unrelated but some years ago I had a bad fall where i landed on sharp tiled steps, pain is in the same place which is why I wonder.
I will be completely fine and then it is as though someone has stuck something sharp into me. A very sharp, brief spike that makes me squeal, then gone. I have had it happen a few times over a day, then nothing for many months.
However yesterday and today it has started happening much more frequently, I will be sitting on the sofa, or walking about, then this horrible sudden jab. I am scared to move ! What on earth can it be ? I tested my urine as I had a nasty kidney infection a few years back and now keep test strips just in case. That was clear. The pain is roughly on my waist, central but slightly to one side .
My GP is hopeless hence me asking if anyone else has experienced this.