Do you have a support system like family or friends you can stay with until you get things under control. Your son is little and it could happen to your son as well as sons of abusers are statistically more likely to become abusers.
You are a strong person and remember that the helplessness you feel is how he has made you feel through manipulation - that's not really who you are. To file for divorce, you just have to go to the courthouse and file. When the hearing comes you can get a restraining order if you worry about him and you can get the judge to award you alimony and child support. The hardest part is getting from point A to point B. He will obviously be upset if he is served with divorce papers while you are there.
If you have some family you can visit until the hearing that would be the best thing that you can do. There are also women's shelter which are a valuable resource as well.




