Newborn strains and grunts all day and night

is this normal or what? i feel so bad for her! and shes very loud and noisy! she is not constipated. she poops and pee alot. right away after she poops she will strains and grunts again but nothing coming out. she does this all the time. i dont know why? she would put her legs on air and strains ,grunts until her face turns very red. 🙁 what is this?