I know this is an old post of yours but I was wondering if it might be allergies? It sounded like you only have the problem at night when you're trying to sleep. Some people are allergic to feathers. I had to get rid of my down comforter and feather pillows. That solved my problem. Other people are allergic to their dogs or cats. I even heard that you can be allergic to those egg crate bed pads, you know the ones to make your bed feel softer? Hope you are better now.