Re: Reactions to stings...
Need to ensure protective clothing is worn and joints are tight fitting. Rubber boots also keep them from coming up inside the pant legs. Bees shouldn't be stinging through gloves and if they are the gloves are not thick enough or tough enough. Find I only get stung when I don't use or use properly the protective clothing. I do get the occasional light sting through denim jeans.
Stinging seems to dissipate in 10 mins and swelling varies and last 24-48 hrs.
Take antihistamine for stings.
If your reaction is severe, purchase an epipen. It's a good thing to have in your tool kit at any rate. And if you are getting severe reactions, you should check with a doctor to see if bee keeping is for you.
There was also a thread a couple of months ago with discussion on sting remedies.
If you always do what you always did, you'll always get what you always got!