Probably had a seizure yesterday

Hi all, I took the day off yesterday and my day had been fine other than maybe still being a little hungover from Saturday, but not too bad. Around 3:30 I woke up on my bed, mind extremely cloudy and my whole body hurting. Especially my tongue. Also found a knocked over cup of water next to my bathroom door. None of it made sense. I barely knew where I was. My oldest was sent home to find out what was going on and we decided to go to the er, an hour away. He says I kept calling him the wrong name and not making any sense. Er poked, prodded me, stuck needles in my arm AND my head in a machine, then tried to make me piss laying down. At the end I think they told me I possibly had had a seizure, but my brain looked fine and I'm not allowed to drive for 30 days. It's all a little foggy. I'm still hurting and have a couple times today gotten a little confused.

What are the odds all I did was hit the seizure lottery once and will never have to worry about it again? When will I feel back normal? What could've brought this on?

Thanks for any help

Spec: 46, male, 250lbs, smokes, drinks beer every 2 weeks and walks 15k-22k steps a day. I work hard and many a time I out pace men half my age and weight. I was a ups driver for a decade.