Insomnia?

Soooo for the past couple of days I've been having trouble falling asleep!! I could be 'dead' tired and can not fall asleep!! But then when I finally drift off, I believe I cant past the first stage of sleep, which if I'm not mistaken there's 5 stages. When I do fall asleep, I can hear my conscious thoughts! YES conscious not subconscious!...Not sure what that experience is called...I shall "Google" it....But I can hear myself thinking and then drift back to sleep. Hopefully I can reach "delta sleep" soon! Or maybe there's too much on my mind :/