HI. this morning i noticed my right ear was a bit muffled so I used Debrox twice within an hour or so, rinsed my ear out with the rubber bulb and it was a little better but still slightly noticeable. I noticed that the Debrox expired last December 2012. A few hours later I took a shower and upon shutting the water off, I had a high pitch ringing in my ear. Its now been a few hours and it hasn't gone away. Searching the web, I'm starting to get nervous that this might be permanent. I have always had lots of wax buildup in my ears and doctors usually end up sucking/pulling a lot out. Is it possible, I might have created tinnitus that I will have forever? I made an appt. with an ENT but can't get in until Monday. Is this ok to wait? thanks so much.