Pinhole rupture in eardrum with PET.

I have been suffering from Patulous Eustachian Tube from 11th January this year, after I had attended a kirtan with really loud speakers. Consulted a specialist and he gave an antibiotic, a decongestant nasal spray and Lorfast AM. He told me to consult again after 3 weeks if condition doesn't improve. Yesterday after sneezing once or twice, I noticed that I no longer feel breathing in my ear. But later on there was some mild pain, which came and went after few hours intervals. Told my father to have a look inside and he said it looks like a pinhole rupture is there. Now today morning I noticed I can feel my breathing again, but after sometime, I suddenly felt some mild pain again and the breathing went away, but came back after few hours. This has happened a few times. Is the air from PET hindering the healing process? How long will it take for the pinhole to heal? I have stuffed my affected ear with cotton for the time being. Please guide me.