With spring on its way (at LAST!!), it wouldn't shock me to find that this is a common occurrence. It can be an effect of allergies, and some time ago, I had a crappy cold/flu that left me with partially blocked ears. They can still block up on occasion, and I think it's because I tend to produce more earwax as winter turns to spring (as well as trap water and shampoo from the shower). Maybe that's a possibility for you, too?
