On the second day of our trip to the Bahamas, our then 5-year-old woke up in tears, clutching her ear in pain. She had been uncomfortable during and after the flight, but we never imagined she’d wake up with a ruptured eardrum. Thankfully, the on-site doctor at our resort quickly diagnosed her and explained that the combination of air pressure from flying and all the swimming (she’s a total fish!) had caused it to burst. It was a scary experience, and I wish I had known then what I know now about preventing ear pain and pressure when flying. Ear…