So yesterday i was weed wacking and i hit a yellow jackets nest. :(

Ouch! I'm glad you didn't have an allergic reaction. A friend had a similar experience and had to be rushed to get medical treatment. He had been stung many times before with no issues, just pain. The doctor told him that such allergies can mysteriously appear like that.

Has happened to me several times, hedge trimming and lawn mowing

Ouch!

THAT'S bad.