Are Cough And Sore Throat Symptoms Of Pneumonia?

I was swimming in a pool on 2/15 and I slipped and went under the water unexpectedly and I wound up choking quite badly on some water. I couldn't catch my breath and I felt like I had water in my lung that I couldn't expel with coughing. Yesterday I began having a hacking cough and a sore throat (fells like my throats on fire). Today I feel even worse, my cough is worse and sounds more "cruddy" and my throat still hurts, my head is pounding and my body is starting to ache. Could I be developing aspiration pneumonia?