Never had one that bad, but I would probably go to the doctor to have it checked out. They'll probably give you a prescription for antibiotics.

I've been cut/stuck (we always called it stung) so dang many times by those things that unless I've put a knife in it's noggin - I am using pliers or a grabber to hold them. I used to use leather gloves, until one of them spun when I was chunking it back in the water and it got me on the forearm (it was my fault). When my grandson catches them at the house - I won't let him touch them.

"The struggle you're in today, is developing the strength you need for tomorrow."