Just read all your posts OP
WELL DONE for leaving that took a lot of courage and a great decision f or you and kids.
You must knwo from reading all those thread you mentioend yesterday that it takes time to unlearn what he has been making you think/do and relearn how to be you.
It is normal to feel like this when you have bee subjected to abuse - you will heal and breath again.
So you are 24ish, drive, feed and clothe two kids, have a full/time job - you are doing a lot more than I did and many other 24 year olds 
Plenty plenty time to learn things about bras and what not - most of MN wear the wrong size bra hence 'bra intervention threads' - just trying to help you see how much you do and have already achieved.
You have lots of friends on here. You have taken the first steps towards change.
Being scared is not a weakness - it is there to alert us to danger, your partner is dangerous.
In the years to come you will relaise he is weak and you are strong. I promise.