In need of advice!!

So me and my bf have been together 10 months. I'm 4 months pregnant (my 4th his 3rd). His oldest lives in another state so he only sees her in the summer and his son lives about 20 minutes away. He went to court (well mediation meeting thing) and he agreed to do visits once a week for 2 hours because at the time he was living above a bar in pretty much a bedroom. He agreed because he felt it was an unsafe environment for his son who has a lot of health problems. Which I understand completely. But now we have our own place. I would like him to go back to court and see if he can start getting over nights or maybe even weekend visits. He comes up with all kinds if excuses. He don't have a lawyer, he don't know how much it'll cost, ect.. it's really starting to take its toll on me. I'm really starting to feel some type of way. He should be aloud to take his son to do things in his own. But that's not how it is.... If he wants to take his son to the park she has to be there. If he wants to take his son for a walk she has to be there. If he wants his son over night it has to be over at her house. She sends pics of him and has to make sure she's in them. I know he can't take his son because of me and that's wrong in so many ways. I feel like she's trying to push him away from his son. And I also feel like they are starting to get close again. Like he's always telling me after visits how they were joking and laughing and blah blah blah. I've tried talking to him about how I feel and it's either my fault, he sticks up for her, I'm imagining it, or I just get ignored. I feel really sad lately and we haven't really talked the last 2 days. Usually we cuddle every night and lately haven't even done that. Idk what else to do......