Forest: Going through exact same thing. Memorial day weekend, I was teaching OW class at our quarry. Pushed too much through equalizing problems to get down to 23 feet because the students had driven an hour and a half to get there. Dumb on my part. A week later pain started. Diagnosed with infection. First round of antibiotics didn't work and on day 8 of antibiotics, my ear drum ruptured. I didn't even feel it, just realized that crap was coming out of my ear. At a Cubs game, no less, while in line for a hot dog. Skipped the hot dog. New round of antibiotics did not seem to work either but when I went back to ENT for third time she said the ear looked much better and ear drum was starting to heal. Now it's 2 weeks later. The whole time I have had pulsating tinitus, muffled hearing with fluid in middle ear and pain. Now the pain is very intermittent, but sharp for 1/2 a second each time. Also, my sinuses seem to be upset, but when I say that I sound like a hypochondriac. I go back to ENT in 4 weeks to evaluate the ear drum, test my hearing and plan next steps. All this with a trip to Cocos Island planned for September 15th paid for and nonrefundable (don't ask about trip insurance or I'll cry). My ENT cannot explain sharp pain and says the fluid may take months to drain. She and DAN docs believe there is plenty of time for ear drum to heal and for me to dive, but in the end, she says, "We won't know until you try". My story is being stupid and pushing too far. I know you are frustrated that you don't know how this happened. No answer for you except when you return to diving descend 10 times slower and equalize from face in water on. From my reading, the first 6 feet set the tone. Eustachian tubes don't recover from stress and don't reopen even after just 6 feet of forcing things.
DoctorMike: if you see this and have any words of wisdom, I'm all ears......
Rob