LO is 3 days old, cannot stop crying sometimes

Hello all, my little one is just 3 days old. There were times today when she couldn’t stop crying, and it sounded like she was struggling to make the cries because she cried so hard. It wasn’t her diaper or milk or whatever we could think of. In the end have to the nurses, and it took them awhile to settle her too. Anyone have any tips on how to soothe? FTM so I’m still figuring out her cries but heart very pain when we hear her cry to this extent. TIA