My advice would be to mark a day on the calendar like 3 months to a year out and just hold on until then. If you feel consistently like this for that entire stretch then review.
The problem is that even if you ended everything today...it wouldn't stop the pain. It would go from the pain of limbo, to the pain of a clear loss.
You'd need to detach a lot more before this would make sense to me.
BUT- I totally can understand why you'd feel like forcing the issue!
GAL and do stuff for you so you can cope
Me:38 XW:38 T:11 years M:8 years Kids: S14, D11, D7 BD/Move out day: 6/17/14, D final Dec 15