I don't know what to do anymore...

I am 21 weeks pregnant, and I have no food in my house to feed myself or my 2 other kids. I am on foodstamps, and dont get anywhere near enough to feed myself let alone my children. Ans they dont come in until Monday. I am throwing up because I have not ate all day and we have been struggling for weeks now. Just trying to make something work. My boyfriend and I both work, and have more bills than we are really able to afford. We have been living with my stepdad and brother for the past year. And I feel like I hand them my entire check everytime I get paid. Because they just come up with all this money that I owe them. We cant put food in the house because they eat it on us. So we spend all of the money we could have on feeding ourselves outside of the house. I have been looking for better jobs for both of us. But getting nowhere on the search. Because my boyfriend is very picky and will tell me that he cant do this and that, because he cant read very well. Or he doesnt want to do that type of work. I'm not sure if me leaving my job is a good idea due to the fact that I have a job and wont really lose it. We want to move out. But not having extra money makes that difficult. And they were supposed to move out, and we would have the house. But they have a new excuse every time I ask about it. I just dont know what to do anymore.