Scared of smth neurological

Yesterday I went to sleep and I was completelly fine and after few hours I woke up with sense that like I don't have left quadriceps. Can't explain it really well, but if I was walking I am sure I would fall down because of it. Feeling stopped after 15 seconds or so, and left me petrified that I if it happpens again I will start falling down, stumbling.

No one ever had anything similar?

I didn't have any issues in the last 7 hours since I am awake, but I got freaked out last night.