Terrible Cough for Two Weeks Cured

I have had a cough for a couple of weeks. Two nights ago I slept downstairs because I couldn’t stop coughing. Finally I remembered I had. Three times that day I breathed it in, held my breath for as long as I could, and repeated a couple more times. The next night (last night), I coughed ZERO times! It’s like it “ate up” everything that was in my lungs. I’m going to repeat today and tomorrow, but it’s basically gone. I truly can’t believe it!