Every once in a while I'll have a dream where I'm having trouble breathing. I'll breath in, but it's really hard to get air. I think it's really happening to me and it's just being incorporated into my dream. Like when I have to urinate really badly, it gets incorporated into my dreams and no matter how much I pee, it's not relieving the pain. I thought maybe I was sleeping face down in my pillow, but this morning it happened and I was facing the ceiling when it woke me up. Anyone else experience this?