The thought of being alone is petrifying.
You will only be able to leave (should that be where you are heading) when you realize that there are worse things in life than being alone. As long as you feel that that is the worst thing in the world the status quo will always seem better.
I hope you have friends/family during this time who are there for you. Someone who has gone through a divorce and come out the other end could be an invaluable source of support and an excellent sounding board.
Good luck.