Stressed out

Since the beginning of my pregnancy I've been stressed out. I'm due in April (very soon) and I barely have anything for my daughter... I bring home $287 every week and I'm still living at home with my mom and brother. I'm the only one in the house with a job.. my mom wants me to pay bills and buy food etc all while trying to prepare for my child.. it's so hard and I'm so overwhelmed no one is helping me buy anything for her. I'm the only one trying to prepare for her. I wish my mom would cut me slack, my brother is 20 years old and doesn't work and my mom isn't making him get a job either. I'd rather stay in a shelter than to live here I'm just done and ready to disappear :(