weird experiences you cant explain?

details are a little foggy cuz it happened last summer but here i go anyway.
i was staying up late as usual and my mom came down telling me to go to bed. i wasnt really tired but i said yes so she went upstairs, whatever. then idk how much time passes, prolly not too long, but i hear my mom calling for me again and i realize im on the floor. i dont remember when i stood up, how i feel down, how much time passed, anything, i just know i was lying on the floor and i had blacked out. never happened again.