2 week old Crying

Knottie75279949

Hi Moms! 

Feeling a bit lost my 2 week old will randomly start crying like really bad and it takes us a while to be able to calm her down. She will do this after we make sure she is fed and clean diaper. We never experienced this with my 5 yr old. She can be completely content and hanging out and out of nowhere a switch flips. Any advice?