Hello, During Dinner Last Night, I Took In Some Lettuce,

Hello,
During dinner last night, I took in some lettuce, it felt like it "went down the wrong pipe"
last night and this morning, I am coughing and trying to spit up whatever it is I am feeling down there.
I did sneeze out a small bit of green lettuce last night. Will this just take care of itself? or,
Should I encourage vomiting or hacking & spitting to find relief? Right now it is just a minor inconvenience. Thanks!