For clarity and future readers: hyperbaric oxygen is contraindicated for inner ear barotrauma. It can exacerbate the trauma and make symptoms worse. It IS indicated for idiopathic sudden sensorineural hearing loss (ISSHL) and for inner ear decompression sickness.I would say go to the ENT doctor asap, do audiogram and all tests related to IEBT and SSHL. Don't wait, as there is a window of time to do the therapy procedures, especially for PLF. It is a medical emergency.
I am not a doctor but recently suffered IEBT and had to go through a course of steroids, and hyperbaric oxygen. After a month I have recovered greatly.
Best regards,
DDM