I woke up about an hour ago with a panicky feeling that I couldn't breathe and spent the next half hour trying to figure out how I normally breathe when I sleep while continuing to feel like I wasn't getting enough oxygen. Now I'm wide awake and a little afraid to try to go back to sleep. I feel like maybe it's an anxiety thing because I'm not stuffed up. But it keeps feeling like if I don't make a conscious effort to breathe, I'm not going to—or not going to do so effectively enough to not die. It also sort of feels like there is a spot around the base of my tongue/top of my neck where it's "sealing" out the air when I try to relax. Has anyone had a similar experience? Can I trust my body to let me breathe if I fall asleep? If not, what do I do?