Hello, I was shooting fireworks about 30 minutes ago and one malfunctioned, blowing up approximately 12inches from my left ear. My ear has been ringing of course, but the ringing keeps getting louder off and on and when I talk I hear myself sounding almost robotic. Ear area feels numb and congested, is this all normal symptoms from ear trauma and if I should, how long should I wait to see a doc? No bleeding, no pain, no dizziness.