Out of body experience?

What I'm about to relate most definitely was not a dream, but at the same time, wasn't an OBE in the classic sense, but somewhere in between.

Anyway, I've been sick for the last 5 days and have missed work as a result. It was about 2pm in the afternoon and I was sleeping. My laptop, which sits next to my bed was switched on, playing music from a streaming radio station. As I lay in my bed, I slowly entered a state similar to how hypnosis is often described; I was very relaxed and self-aware but not fully awake. In this state, I felt very relaxed and happy. I then had a brief dream where I got out of bed and went to prepare myself a snack in the kitchen. However, I realised all my electrical appliances had gone, so no kettle, toaster or microwave in the kitchen and no TV or consoles in the living room. At that point I woke up, and realised I had been dreaming. Only that was also a dream. As before, I got up and went into the living room again and, knowing I was still "dreaming" decided to go outside instead, so instead of going into the kitchen, I walked out of my front door.

Outside my flat are steps that lead out into the street. It was a beautiful, sunny day outside (it is actually bleak and miserable today in "reality"). There is a tree by my front window, but this time, it was a little to far to the let, which I thought odd. In spite of this, I continued past the tree and skipped over a small wall (not there IRL) and made my way onto the street. I live on the top of an incline, so the road goes downwards towards town. I ran down this road, which looked familiar at first, but as I continued it started to change. The familiar urban street setting changed into a large, sprawling park. Where there would normally be houses were acres of green in both directions. There were people scattered around here and there, including (bizarrely), one girl attending a small row of graves dug out of the side of a road to my left. I waved at the long-faced girl as I walked past. She listlessly waved back. I also saw some children in a park with their parents some distance away.

By this point, the fact that my surroundings weren't consistent with "real life" was no longer a concern, I was wandering around in a very unfamiliar new world on a bright, sunny day and felt very happy. I saw another hill in front of me which I climbed. There were a small group of people at the top of the hill of whom I asked about my surroundings. I told them I was lost and asked if they could tell me where I was. However, they looked at me strangely and started to back away as if they thought I was crazy. I could not understand why they were so unfriendly. And shortly after this, I woke up properly.

Interestingly, whilst this was happening, I was aware that my physical body was lying in bed, I could even hear myself snoring, and could hear the music from my computer perfectly, but I also knew that my consciousness was elsewhere.

What could this be?