First off... .welcome! You have found a great site to help you through whatever you need. The members here are fantastic in their support and sharing. If nothing else, I hope you feel as comfortable here as I felt when I first arrived. I know that is important - so I do hope you stay around.
It isn't easy going through what you are going through. Yes, your story sounds all to familiar as I'm sure others will say this as well. I initially found it interesting and eerie and comforting to know that there are other people out here going through almost word for word what I had been going through. so it made the transition a lot easier.
I'm sure the more you have thought about it... .you saw red flags all over the place early on in the r/s but for whatever the reasons you let them slide by. That's very common (and as far as the folks here... .it's kinda normal. Normal as in a lot of us did the exact same thing).
I bring this up to make this point... .some of the anxiety you may be feeling now being in limbo regarding the divorce is sort of the same as seeing the red flags and letting them slide by (well, until it was 'too late'. What I mean is, you are already in limbo and not feeling too good about it - but you moving forward isn't going to make anything any worse. So this feeling is just gonna sit there (like the red flags) until things get so much worse you have no other choice but to do something (or another way to say it is... .someone is going to make the decision for you).
This isn't to say "Go for it"... .or even to say "let it marinate more". But it is to say... .it is time for you to take your power back because this is about you. You are the only one responsible for your happiness (and sanity). This is your time. It is all about you, my friend.
I know it is not easy - and I know there is a lot of pain and frustration and all that... .trust me... .so been there.
But at the end of the day, you are doing postivie things for you (and your child)... .trying to align your self with a good support system (this place included)... .so do whatever you need to do to focus on you. The rest will fall into place. I promise.
Hope to see you around... .and, again, welcome.