I just want to snap!

Brittany • Mommy to a wonderful 12yr old boy, 9yr old boy 7yr old girl 6yr old girl and 3yr old girl. Due March 11th 2023 with a boy.
I'm 7mths pregnant. We are 29&27, we don't live together yet he doesn't have a car, and to be honest if he can't make time for me now why would I ever want to live with him. The only reason I stay with him is because I don't want him taking my daughter every other weekend and me not knowing what situation he is taking her into. I just feel like loading the back of my truck up with mine and my sons stuff and running away :-(