cotton ear/ear popped
well last night I opened my mouth wrong, and I think it led to what I'm going to explain... a few mins. later I heard a pop and after talking a few mins. I noticed that it was like I was hearing things through cotton in my ear, it's just on one side. I've tried holding my breath while plugging my nose, and all that, and it still hasn't popped. It's been over 12 hrs. like this. Any ideas of what it could be, and how to fix it?