Hellllppppp

I’m really struggling with my relationship right now and I think it might be my own fault. I don’t trust him. He has snap chatted girls, sexted another girl he works with and god knows what else. No matter what I do I can’t seem to let it go. I’ve told him numerous times it’s over and all he keeps talking about is custody. I love being with my baby every day. However this has taken a toll on my mental health. We barely talk, all he tries to do is use the baby against me. I’m just really unhappy in the relationship. A person who loved me opened up to other females. Something just doesn’t sit right with me about that. I don’t view myself as a perfect person but I do my best to communicate with him, he’s like my best friend I tell him everything but I don’t get the same in return. I’m lucky if I catch him talking to someone else, I learn so much! Last night he made me feel trapped and took my baby car seat along with my car keys. Earlier today I packed up my baby formula and left. I cannot do this. It has been one thing after another and I’m just fed up. I want to move back out to the city area and get a job. I guess I’m limited to only working the morning bc the only other person that can watch him for me is my mom. I do everything for my son. I take him to doctor appointments, wake up with him, play, feed him. He’s become my life in such a short time. I just don’t know what to do. I was taught always listen to my gut bc anyone can tell you anything. There might not be hard evidence but we know if something is wrong in a relationship. I’ve been stuck in this root for a long time and I just want it to be over. Does anyone know how custody works with an almost 5 month old. His dad works 2 jobs, doesn’t have a work schedule he works when and until his boss says otherwise. This is my first child and it hurts so bad knowing I’m going thru this not allowed to really have feelings bc I know my baby can pick up on them. This is not ok.