I hope you are feeling ok now. I know this must have been scary.

Did you have any indication it was coming on before it occurred? Did anything happen that day, unusual (lights, foods, smells, sounds, sights)? Some times there are pre-indicators (not always), this can help you in the future make sure you are in a safe position (lying down with something soft under your head) and to tell someone to get help. Some times they just pass without incident but should contact doc about it even if so.

My experience has been friends and animals with seizures, varying degrees and onset in life. It could be a one time incident or may continue, one never knows. If they continue and depending on frequency, to discuss treatment options with your physician. One friend had one and never again; another would have them every few years; another was epileptic with multiple bouts daily and was on medication. There are so many reasons and causes. Treatment depends on many things. Hopefully it is one time incident and has passed.

Be sure to take good care of yourself, be safe, and be in contact with your doc. Sending well wishes meanwhile.