Can Anyone Explain This? Options

I'm pretty sure I know the answer to this, but I wanted to open it up to other interpretations.

Two nights ago I was sleeping at my girlfriend's place. I had a pretty restless sleep (felt like I was awake all night).
Just before I drifted off after waking up for the tenth time I distinctly heard someone shout the word "out". Now what was strange about this was that I didn't hear it with my ears, I heard it in my head as If I was thinking to myself, but it was a different voice to my own.

The voice was a man's voice of about middle to late twenties maybe earlier thirties and was very clear and powerful sounding (demanding me to get out?) however, I didn't sense any sort of anger from the voice, it sounded powerful and demanding as I just mentioned, but I didn't fear it. Of course I got a bit of a shock hearing someone else's voice in my head.

So at first I thought my studies are getting to me and I'm going insane but I then though about my training in CM.
The last few days I have done the LBRP every day. Before this week I found it hard to find the time to do a ritual at least once a week. So I thought that the increase in magical practice has increased my awareness to the spiritual environment and I have telepathically picked up on some spirit's vibe who has apparently been telling me to get out from some place (girlfriend's house?) and I have only started to tune into it.

It didn't happen last night at my place so I'm guessing the spirit is based at her place or just visited me.
I don't know of anyone passing away at my girlfriend's house (her family has lived there for about 12 years) and nothing strange has ever happened to her place which could suggest a haunting, so I'm baffled as to why I heard this voice.

Of course I could just be going insane (IMG:style_emoticons/default/insane.gif)

I decided to post this to share my story and to get some opinions. So what do you guys think?

I was fine when I went to bed though and nothing happened, so I'm pretty sure that if there was a jealous spirit there, they would be even more annoyed at the fact that I was in a semi drunk state and sleeping with my girlfriend.

Maybe but alcohol dulls the senses, even in moderate quantities. ummm from my expereince "a bit wasted", at least back in my more crazy days meant about a 12 pack of beer, at least. Either way alcohol can actually hasten the sleeping process, meaning you'd fall asleep faster than you would totally sober. Either way I would try to do the same thing recreating the original situation as best as possible.