Husband and I got in a fight in the car

I've complained about my spouse and family many times. But I can't seem to break out of this toxic cycle. I got in an argument with my husband in the car today and he decided to drive up to my elderly parents home and let them know we're fighting. My dad is 70 and when he received the phone call his blood pressure went up high. He was startled and didn't know what was happening. I left my husband in front of my parents home and he wouldn't go inside and was standing in front of the car not letting me drive away. He has threatened me many times with calling my parents when we argue but today he decided to drive up to their home in the middle of an argument. I lost it and started hitting him. I drove off and when I came back my dad was furious and blaming me for everything that happened. My psychotic brother decided to get involved and also started blaming me without even hearing me out on what is actually happening. On one hand I was heartbroken for my dad and his health and on the other hand I realized they want me to submit to my husband no matter what in fear that I will get divorced. I'm trying to recover after what happened but I'm at a lose of words. My husband couldn't care less about almost giving my dad a heart attack and told me I hope I learned my lesson today. #relationships