Having 3 young kids almost did me in, and I had a partner and no marital strife at the time -- I can only imagine. I would definitely make sure you don't do more than 50% custody at this point.
I realize you are their mother and you love them, but you are also a person in a crisis, who needs time to herself to deal.
What is your current custody agreement?
Accuray
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015