thats crazy, I'm sorry you had to go through that. The exact same thing happened to my friend about 6 months ago. They ruled it a suicide, but I really think he just mixed the wrong drugs, fell asleep, and never woke up. His girlfriend used to call me every now and then, and have me go over to his house to wake him up and to "see if he is still alive". I thought she was joking until I heard he died. I think she was the one who found him.
I couldn't imagine going through what you're going through. Thats really rough. I think this is probably the worst thing ever posted in this thread. hang in there.