Baby's left rib cage

Hi mommies! Normal lng po ba mas nakakapa ko left ribs ni baby? Worried po kasi ako baka hindi pantay ribs ni baby. My baby is already 4 mos. and so far healthy & hindi nman sa umiiyak pag nahawakan yung part na yun ng ribs nya. TY in advance po sa sagot. #1stimemom #advicepls