A similar thing actually happened to me - I wound up triggering a hemiplegic migraine, something I'd never experienced before. Unable to talk, focus my left eye, or feel anything on the left side of my body. Probably days of marathon coding along with dozens and dozens of Red Bulls.

To this day, I still get pretty nervous anytime I lean on an arm and it falls asleep or I get any tingling.

Glad you're okay, friend.