12 days postpartum & feeling overwhelmed

I’m a first time mom and gave birth a few days ago.I’m starting to feel overwhelmed. I love my baby sooo much but I just want to cry sometimes. I’m usually an organized person but ever since I became a mother my room is all over the place, Im going days without getting a good meal in , and I’m sleepy as hell . I’m also a single mom so I don’t get to split tasks in half with her father so I’m doing all these tasks by myself. I just feel guilty because a few times I felt myself getting aggrevated with my baby who doesn’t know any better. I just feel like such a bad mom. I’m crying as I write this 💔 please tell me it gets better