If its gas, try doing the bicycle excercise with her legs ( grab both her legs and mive tgen opposite up and down like shes riding a bike), you can do it while rubbing in a downward motion on her belly, it helps them get
gas out. Or bend both legs at the same time, and push them
in towards her chest. Look up baby massage too. I would ask a doctor, or call a nurse, before giving her anything, they do have gas drops too.