Help me not feel so guilty.. 😞

Ladies I feel like an awful mom and I need y’alls help and support to make me stop. My baby is is 3 weeks old, almost a month. And I want to stop pumping and giving her breastmilk. I’m constantly in so much pain.. when I pump when I I don’t pump, when they are filling up, it just feels like I’m being stabbed in the chest with a screwdriver. I want to give her my milk because I think it’s what best but it’s making her gassy and having tummy aches. I want to switch too 100% formula and not feel awful about it.. please help me out.