When I Took A Drink Of My Pop, Some Of

When I took a drink of my pop, some of it went down the wrong pipe. However, I didn't want to spew liquid everywhere, so I held all of the liquid in my mouth until I coughed so hard some sprayed out of my nose. After swallowing the rest of the pop, I blew my nose to get the rest of the pop out. I've been coughing ever since, which has been two hours. My throat and my back are starting to hurt, and my chest feels heavy. I'm 20 years old, 5'4", 174 pounds, and I've never had lung troubles before besides a cough that could last a few weeks after having a cold.