Yes indeed this is a problem.
It could have been a TIA, a mini stroke. I would not and can not recommend waiting for an exam, and ultrasound studies to make sure there is not clotting going in the the neck arteries or the heart.
I would even strongly suggest you go to the ER now and report this episode.
Mini strokes can become full strokes later.
You need to get checked out.
Seizure is another possibility.
OK, let me know if you have more questions.
Also, please click a positive rating on the rating scale. In fact, a 5 rating squares me with just answer and allows me to provide prompt and accurate service to you, but does not increase your cost. And, I will be here for any follow up needed.