I have a perforated eardrum and I use my cpap on a level 14 every night! You need to plug your ear with a soft silicone ear plug like "Mack." These are sold all over, even at Walmart. These have flanges to keep air and water out, so you can also wear it while showering. Hope this helps!
I do swim occasionally and I was an avid swimmer when I was younger. I have been to the doctor and they said they couldn't really do anything about it. I have not been to an ENT or Sleep specialist yet due to lack of funds. I just miss sleeping and cannot use the CPAP machine.
Treatment of tympanic membrane perforation (TMP) falls into 3 categories. No treatment is necessary for nonswimming patients with minimal hearing loss and no history of recurrent ear infection. A hearing aid may prove the only necessary treatment for patients with symptomatic hearing loss but no infection or swimming history. Other than that you can get a typanoplasty done.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.