OUCH OUCH OUCH OUCH!! haha I've seen someone get stung in their armpit, the top of their head, and between their toes(tried to kick the wasp away) but never on the pinky. hmm. ouch i bet it hurt. haha i got stung on the forhead once, it swelled up and was all sore for a few days. i HATE getting stung..thats why i leaveout sugar dishoap and water (mixed together) to attract bees/wasps/hornetsand japanese beetles and KILL THEM! haha got off topic there, sorry....

I got bitten by a spider camping a few years ago on my ankle...it got all swollen and red and itchy, sounds like what you have? idk. my friend told me it was a jumpng spider (but don't believe my friend!) I just put anti-itchy cream on it and forgot about it, and it went away after a while.

then once i got stung by a black hornet (my sister was stung twice, we hit the nest on accident with a broom) on my leg (poor leggie!) and it got all swollen and I think itchy..i was allergic to BLACK hornets but not regular hornets or any sort of bee or wasp. but it was so bad I had to take a special medicine that my doctor gave me for a week or two. it was either that or getting a bunch of shots. haha. maybe this is what happened? i dunno.

just thought i'd let you know.
hope it gets better!