Don't know how long it had been there, never felt anything get trapped, and first I knew was when there was a sudden intense pain on my head. Pulled over and took helmet off and brushed off my head, but didnt see anything.
Got to work two mins later, and a colleague pulled the stinger out of my head.
Been years since i was stung and forgot how much it hurts. Had pain killers and just feels like a bit of a headache now. Not swollen very much. Hopefully it will subside before the ride home tonight