I suffer with bad anxiety. i choked on some water yesterday by swallowing down the wrong pipe. im not sure that i coughed all of it up. will i get aspiration pneumonia this way?

Not likely. Risk factors for aspiration pneumonia are old age, drinking large amounts of alcohol, poor gag reflex, and being less alert from medications or illness. If you are otherwise healthy, you will not develop pneumonia by choking on water.

With a good cough reflex, aspiration pneumonia is not likely, a nagging cough may persist for a while.