Hi
@Sharrryn, I admit to not using Dexcom that often but have had a sting or two in the past. Similarly some needle inserts from my pump hurt going in and for a day or two afterwards. I figure sometimes we hit a nerve and slight movement keeps the nerve stirred up until either the cannula is removed or some swelling builds up to push nerve and cannula part.
Now coming from Australia, I know that way up north we have very nasty jellyfish - and vinegar is the treatment for a sting from those (and ambulance, hospital etc ).
Best Wishes on recovering suffering from an annoying but lesser sting !!