Im scared

Dont judge but me and my bf dont have the greatest situation. He lives with his girlfriend that he claims he hasnt slept with since she got pregnant almost 5 years ago. I live with my ex and my kids he has custody. Im only here on the weekends and im with my bf during the week... im pregnant and scared. Im gonna get the boot from my exes when he finds out, i dont know if my bf will actually leave his girl and live with me like he says. I dont know what to do