Sleep Drunkeness

A couple of months ago, I woke up from my sleep not knowing where I was and I had NO sense of time at all. I didn't know how I went to sleep and I couldn't tell if it was morning or night. I would come home from school, take a nap, and when I woke up, I thought that I had slept passed school. This lasted for about a week and stopped. Weirdly, I had sleep drunkeness again yesterday and today. I just want to know if anybody has been through this because I personally don't know anybody that has and this isn't commonly talked about.