How to tell my family

How do I tell my family I am pregnant? I'm 25. I have a degree and a full time job. I support myself on my own. I have been divorced over a year now, but I slept with my ex-husband and got pregnant recently. My family hates him. We had a rough marriage, but we love each other. I don't know if we can be together or not right now, but we're having a baby. Its a messy situation and my family will be pissed. I know it will be hard, but I am happy and excited and scared all at the same time. How in the world do I tell my family?