Breast feeding troubles

Sabrina
I'm sorry if this is posted in the wrong section but I really need help. My baby boy is one week old and hasn't been latching on properly and I didn't know because everyone was telling me I was doing really well little did I know I wasn't feeding him much 😔. So when I got out of hospital he kept on crying because he was always hungry so I gave him formula one night and he loved it. And slept for hours. I have been giving him as much as I can from me because one of my boobs is dried up but it's not enough. Today I was able to express enough from me and he rejected it and was hungry not long after drinking it because Iforced him...  What is wrong with me?? Help please