Have I ruptured my ear drum?

I dont remember how or the direct moment it happened, but I was just sitting down at the computer next thing I notice is that me right ear is muffled. I tried all those tricks to relieve ear pressure and nothing worked so I went to thing maybe itll pass but it's still hear. I cleaned my ear and nothing happened! Right now I can barely hear out of it. It has that quite sound like if you close both ears you'll hear what I hear. Is this permanent? :(