SO Cheating with 4 weeks to go

I am almost 36 weeks pregnant and have relocated 3 hours to move in with my childs father. Immediately i have been faced with the fact that he is cheating. He has females calling him all times of night and i even caught him on facechat sextin with another female. I moved here from a relatives house which was really unstable. Im really at a lost for ideas on what i should do bc i literally have my whole lifes possessions in my car and dont know whether i should just continue to stay with him and pretend i dont care about the other women or try to go back with relatives even though its not a clean or stable environment. Ive also been released from work due to pregnancy complications and i think he is using that to his advantage. Sorry for the rant just need some advice. FTM woes