Was this Sleep Paralysis?

[Ninjaa]

Something weird happened to me last night, I was having which seemed like a normal dream, it felt like I had a bit of awareness, well anyway in this dream I was trying to find something so I found it and it was some letter and in my dream appeared someone on the toilet, I was holding a letter and I thought to myself inside the dream "Oh no theres going to be alot of words about 'something' on this letter". I then heard a very deep voice repeating something, it woke me up and when I awoken(this is the part I think is SP) my head was vibrating violently and I could still hear the deep voice talking about 'something' and it was very loud, but I didn't fear anything I just wanted to try and understand what it was saying, it then got quieter, it ended after about 5-6 seconds, I moved my arm and it felt heavy and my body felt really achey. I've never been awake during sleep paralysis before and this is the first time anything like this has happened to me.. so anyone have any idea what happened?