Fussy newborn

My LO is 1 month old and sometimes i just can't tell why my baby is fussing about it makes it hard for her to sleep. She's always been fed on time, changed her diapers immediately whenever she pee or poo, shower her daily, comfort her, burp her or massage her tummy whenever i feel like she got gas. She sleeps soundly at night and wakes up for feeding but if its in the day I can't really tell what's bothering her I'm feeling so helpless.#firstbaby #firsttimemom