Opinions please

I started dating my bf in August of 2014 . So this is my boyfriend and I second child . My first daughter was born in July of 2015. When we first met , everything was greattttttt . He was staying with his mom and she saw how deep involved we were getting and how close we were so she started telling him lies about me and talking shit . I use to let it slide then I started talking to her because ion like the fake shit she was doing . Even told my boyfriend my daughter was his when it was impossible for me to cheat , we worked together same shift , shared locations and when we weren’t working , we were together . ( I loved it ) . Like literally after he nutted in me he was like test in a couple weeks , watch you be pregnant and I was !! So we moved in together in 2016 and got our own apartment. His mom stayed around the corner , she used to call his phone allllllllll day , text allllll day , get him to run errands for her as soon as he gets off . He hasn’t even came home to his child and I yet . We barely saw each other because I work 10 pm - 7 am and he worked 6 am - 4 pm a hour away so he would be getting home around 6 . I would be laying down for work and over and over again . I started complaining to him about it and he talked to her about it and she claimed I was jealous of them . So , after he saw I was about to leave him and not deal with it , he nipped it in the bud , well her I am 6 months pregnant with out second daughter and her she is calling and texting all day or wanting him to come over . And let me not forget to mention she treats my child differently than the other grandchildren from his brother because she doesn’t like me. I’m to my breaking point and about to call it quits . I barely get to spend times with him , I even got a work from home job so I’ll be home more.