I need your help 😪 I have a two month old and I don't understand her :( everything was perfect until…

I need your help 😪 I have a two month old and I don't understand her :( everything was perfect until two weeks ago. Everytime I'm gonna breastfeed her she CRIES AND CRIES.... She only CRIES when I'm holding her on any laying position... As soon as I put her standing she's happy. Sometimes I can feed her bouncing her and I have to walk around the house.

My supply is good. If I squeeze them there's milk and when she's eating my boobs leak a lot... I'm NOT Supplementing her with formula.

she's having enough to wet and dirty diapers.

She doesn't have reflux, she's not sick, no fevers, she didn't spit a lot. I burp her too.

Sometimes when Im trying to feed her she archs her back... But I burp her and still archs it.

Now... At night she doesn't cry and breastfeeding is a good experience.

I can say that I'm going crazy. I don't even wanna go out, thinking about how it is going to be....

HELP :( THANKS