First time single mom

I lost my job when I was about 5 months pregnant I fell behind drastically with my finances I got another job but I wasn’t in a position to maintain having my own place so now baby and I are home with my mom, but we don’t always get along, I often times feel trapped like I have to filter everything I do and say but I’m dealing with it for stability at the moment, and on top of that she refuses to allow my sons father to come visit him he is only 2 and a half weeks old so he really isn’t big enough to go anywhere but the doctors and home... today I told her my son and I were going to go by my grandmother for the weekend just to get some space and new scenery and she told me if I leave we can’t come back... I’ve don’t everything my mother has asked of me including getting a restraining order on my sons father that prevents him from being near me or the baby, I’m only doing this because I know I have no where else to go, my sons father does not have the ideal living situation either. Knew I return to work in June I will be working towards leaving as soon as I can... but I find myself more frustrated than I should be with all the pressure from my mom I attempt to tell her how I’m feekig and she immediately assumes it disrespect, so I’ve learned to just remain quiet and unhappy by it’s getting to me more and more each day. What should I do?