Girls, hello. I'm exhausted. Problems with my tummy. My daughter is on…

Girls, hello. I'm exhausted. Problems with my tummy. My daughter is only a month old. She can't go to the toilet. She has diarrhea like water. But it's yellow. What should I do????? We give her baby food. We were at the doctor. They prescribed probiotics. I've been studying them already. Because of the diarrhea, everything hurts.