Tell me about your closest experience to death?

When I was in my senior year of high school, I fell asleep lying on my stomach at night with my head buried in the pillow. Then the next morning I felt breathless and almost suffocated. When I woke up, I found that I was lying on the bed, my head was buried in the pillow, I couldn't lift it up at all, and I couldn't move my whole body. So I tried my best to raise my head, and finally raised my head after about 50 seconds. Now I am scared just thinking about it.