Awakening from a mild coma

So Saturday I decided after working that morning and being out in the sun for a few hours, to take a little nap. It was 6:00 pm and I thought I could take an hour to pick myself back up. 14 hours later I wake up to what felt like coming back from a week long coma. I didn't know what day it was, what I was suppose to be doing, or even who I was. It literally took me a couple of hours to get things straightened out. So now it's 8:30 PM and I have to be at work in the morning and I am still trying to figure out what was real and what was a dream. I have come to the conclussion that any sleep over 10 hours is coma like.