I've never came to that stage but I have come very darn close. So, although I dont know how it feels, I have felt my stomach getting tight and getting sick a couple of times preparing the paperwork.
I, too, think it is another phase. You didnt want to end up divorced but girlfriend, a marriage needs two persons.
Calm down, nothing changed since ...yesterday. It's all a matter of perception when you get to this point, I think. Hugs K