Disconnected

I don't know why, but I feel greatly disconnected and it's scaring me. Been feeling like that for a while now, gradually getting stronger and stronger. Is this because a new change is happening within me? Or is it something else that I should know of? Is this even normal? I'm terrified about what's going to happen next. Am I going to be going off the rails, become a madman? Or is this a sign that a bigger, and better change is about to happen? I feel so disconnected that it's scaring me.