Stressed 😭😭

Sometimes I wanna break down an cry cause I have a 3 year old and 1 (girls) plus pregnant I'm 31 weeks pregnant my boyfriend is a tow truck driver and his schedule is so outrageous is stressful all I ever ask for is help with the kids and it's so hard cause he barley help out with anything if he does he get so frustrated and give them back to me to deal with like it's so hard I just want help I never do anything for myself ibdont get a break I feel like I can't take it anymore and he doesn't understand at all