Divorcing a cheater

Hi ladies I really need help I have been with my husband for 4 years and been married only 1, when I left for the ARMY he cheated on me he brought her into our home had sex with her in our car brought her around my son and when I found out I was pregnant so I left and went to stay with my sister for a week and when I returned home with my nails and hair done he got mad and put his hands on me and I ended up losing the baby... I’m now pregnant again and I want to get away from him but he pays the bills and I don’t make enough financially to live on my own and since we’ve only been married a year I don’t think I can get alimony, does anyone know of any other ways I can get money from him besides child support??? He is now texting soo many other females going to see them not coming home and probably having sex with them and one of those females is the one he cheated on me with before...please give any advice you have, I don’t have family close that I can stay with

EDIT : I was told I can only get alimony if we were married at least 10 years and if I were to get it, it wouldn’t be much. He has the upper hand right now and he knows it and that’s why he doesn’t care what he does or how I feel I am still in the ARMY but I’m not active.