Anyone else??

Okay so my 2.5 week old has HORRIBLE gas I’m talking screaming fits grunting crying you name it every 10 mins throughout the day....except when she’s breastfeeding? She’ll latch for a good 20 min each side now (I think a lot for comfort) but she has zero fussiness when latched. But when she’s not eating about 20 min later she’s back to screaming. And yes i make sure she’s not doing it out of hunger I also give her 2 oz after out of a bottle each feed (to help gain weight from a low supply before). Anyone else have this problem?