Shouting at my daughter

My daughter is 15months and dont get me wrong I love her so much. But these days everything is so stressful, I got pregnant again at 9months pp and I was not ready for that at all, and I didn’t expect the toddler stage to be that hard plus my husband lost his job and Our insurance expired, so I have to pay for the hospital. So I’ve been shouting at my daughter and getting mad at her for no reason and I feel awful, I don’t deserve her, she was such an easy baby but now the constant whining is driving me crazy 😭