I'm miserable with my abusive husband. i need advice please?

2 years ago i met this guy, and we lived almost 2 hours away from each other but 3 months after meeting we began dating. and not very long into our relationship he became very verbally and emotionally abusive and controlling. he also has bad anger issues. i feel like i've been walking on eggshells with him for so long. we were seniors last year and almost everyday while we were at school whenever he would text me he would accuse me of talking to other guys and all kinds of crazy things that he thought of by himself. and literally we would fight all day everyday. through texting since we lived so far from each other and only saw each other on weekends. and he's so psycho he would start fights and call me every bad name he could think of then when i would get fed up and tell him we were over he would start apologizing and crying and say he would kill himself if i left him. and stupidly i always changed my mind. then 8 months into our relationship i found out i was pregnant. our son is now 5 months old, and we had to get married because he's going into the military. he's still the same. he's called me the C word more times than i can remember, and he also treats his mom and sisters bad too. and we just do not have the same outlook on life or anything. he calls black people the N word and makes fun of every race except his own. we're white by the way. and he hates gay people. and i don't want my son growing up thinking he's better than everyone cause he's white or making fun of gay people. my husband is a bully and he even knows it. i'm so miserable with him but i don't know what to do!!! i'm scared if i divorced him i would lose my son. can somebody please give me some advice :(