Not Sure What To Do.

I am in a tough situation because at this point I am so dependent upon my husband. I left a good job to go back to school to become a nurse and at this point, I have no money coming in that's technically my own. My husband is amazing and wonderful until he drinks too much. I gave him an ultimatum two months ago, but since tonight he has broken his promise to be to limit his amount of alchohol to 2 drinks. When he is drinking he is so verbally abusive that I just want to scream to dround out the pain of his words. It's so overwhelming to me and it hurts me so bad. Tonight I was driving us home from a sporting went that we attented with friends. He was so angry with me that I "embarrassed"him in front of his friends when I was getting upset with Him be ause of his drinking, that he grabbed the steering wheel of our car and tried to swerve the wheel to scare me. I know this marriage is abusive. I know I don't deserve this, nor shall I tolerate it, but I am so frightened that I will never have children or be able to achieve the goals I have envisioned for myself if I leave. I keep telling myself to just stick it out for 2 more years and then I can get out of it, but I am going crazy.