Divorce Support Forums: not sure what to do

im new here so bare with me. i have 3 children of my own.and my hub 1 child. we have been married for close to 5 yrs now. my question is i am constantly walking on eggshells, my stepdaughter lied to get out of our home,my son has extreem behavioral issues, my daughter got herself pregnant to be able to move out and now my youngest is starting to show real behavior problems. not by any means are any of these children ever been perfect but they were never this bad (just the normal sib rivalry up until now)
but anyways my daughter told me she wanted to leave because of her stepdad said she didnt like the way he treated me,my son has gotten very disrespectful towards women.that said here's what goes on
i am almost daily put down for my teen yrs,i was molested when i was a child by an older cousin last year said cousin got my number somehow and tried to call me, (i told him not to call me ever again)when i told hub when he got home he said" what exactly is going on between u two? why would he call u unless something is going on" when a bill is late it is my fault though he refuses me to work when i did before he says"i will just go to jail for some guy bothering u" and we are always late on something due to the fact he has kept on going and getting more things on credit that we dont need and we cant pay for" if i forget to get an item from the store for his mother (i do her shopping he wont and yes she is able to do it)when i do mine i am cussed for it. i have been trying to get money together to leave but there never is any left after all the bills and i have no other place to go.
what can i do?i feel as though i am stuck here . and i dont think i can take things much longer. i need to do better for myself and my children but feel as though i dont have any where to turn.