Can’t afford much what should I do ?

So I have a 12 month old and currently 13 Weeks pregnant with the second baby. My husband and I are struggling financially, we both make the same amount and just barely getting by. $18hr, We share my car which isn’t really in good condition but it’s paid off, so much work needs to be done that we’re probably better off getting another car itll have to be carnote because it’s urgent and we can’t afford to save up for one. I’m just stressed and overwhelmed and need some encouragement…unfortunately I can’t change the past I can only move forward in positivity. I probably shouldn’t have married someone who isn’t financially stable and I should’ve went to school and got a degree for a better job. What do I do now? Money is low, we need a car, late on rent..anyone been in this position? Do I leave and struggle alone? He contributes but it’s just not enough and we try to work around each other schedule because we can’t afford daycare and I also don’t trust it. We’re 26 & 32 too old for this shit