Uk mums help please

Any uk mums on here? I’m 20 weeks pregnant. And really struggling financially at the moment. I work full time but I am very low paid and get no help. After I’ve laid my bills I have barely anything left.. does anyone know where I can get help with emergency costs. Like to buy food and top up my electricity etc. I’ve looked online and it seems unless you receive some type of benefit you aren’t entitled to anything at all. Any advice greatly appreciated