I Have Blacked Out

I hate it. It's just blackness, no dreams, no thought. I imagine if I didn't wake up, then that's what death is like. Everything sounds far away and starts to look blurry and dark vignette starts to grow. After coming to, I feel on fire, if I do have to move soon I gotta crawl. Otherwise, I lay on the floor, hopefully tile, until I'm somewhat stable. I never remember hitting the ground, but I usually feel the pain of it if I didn't get on the floor by myself in time, more so in some hours or a day later. It happens a couple times a years for me. I can put my head between my knees or bow down on the ground and that'll usually keep me from blacking out. If I know it's gonna happen I try to find a bathroom or a place no one would find me.