I was wondering if this could be a DID symptom. The other night I went to bed. The last thing I remember is closing my eyes, and next thing I know I'm opening my eyes and it's morning time with the sun shining through the window. About 9 hours of sleep. It literally felt like no time had passed. It really freaked me out. I did not drink alcohol or take any drugs. I've read this can sometimes on rare occasion happen to people, mostly children, and that it's caused by trauma or when your body needs to do some serious repair, and so your enter very deep sleep, but that when you awaken you're supposed to feel rejuvenated. What was even more weird was that I felt so completely drained that I had to go back to sleep, which I slept for several hours.

Could this have been an alter or alters taking over my body for the entire night?