I'm a new diver and am currently in Aruba. We did one shallow dive yesterday, max depth was 21 feet. My right ear hurt a little afterwards. Then I woke up during the night suddenly unable to hear well out of that ear. The canal is very swollen, and the ear lobe is red, a little swollen and sore to the touch. I can hear crackling if I move my jaw. It feels like there is water in my ear and all sounds are muffled. I won't be going home for another three days and would appreciate any advice. This feeling is very frustrating. I don't plan on diving again on this trip.