Stressed out Mama Bear

I have three children, one with my boyfriend and he has a child without me. So it took me a while to get my current job started and my boyfriend agreed to watch the children temporarily until I got the proper childcare for them. My boyfriend is going back to work at his job which requires him to be away from us four days a week and then he just recently decided he’s gonna work with his father which is probably going to require him to be away from me and his seven-month-old for those three remaining days (his father lives 2.5 hours away) and so forth the next couple months. He now is upset that I’m making him miss out on money because he had to watch my children. Him and his father agrees (he told his dad all of our business ) that I should just be a stay at home mom and take care of my children and he just gives me money. The job he has with his father is going to bring in a lot of money for my boyfriend lately I have been super stressed I haven’t had a break from my seventh month old who is very needy in 3.5 months. I am literally stressed every day. Jus this week I sideswiped my car into the wall . I literally haven’t had any time to myself in a while . And he thinks it’s OK for me to just deal with our child alone and go to work with his dad & his regular job I do not live near my family so I cannot ask them for help like I usually would do. He claims I’m being selfish and I’m only thinking of myself. Basically we are rarely gonna see each other and I believe that our relationship is going to be in jeopardy