Anyone else feel like this?

I’ve been having a real tough time with breast-feeding, my relationship with my fiancé ,just everything in general.. I don’t even know how to cope w/ this I feel alone but i know I’m not .. pretty soon I’ll be by myself taking care of my LO and idk if I can even do it . Everyone will be at work and it’ll just be my baby and I ..I’m thankful but I’m scared . Like just last night I had a breakdown I couldn’t even change my baby when she was crying, my fiancé took over and I just left outside crying wtf man I feel like a bad mom already :( and I don’t want my fiancé regretting having a baby w/ me bc I’m weak and not a good mom .. even though he’s not like that whatsoever, he’s perfect for me but I just feel so lost right now ..