One rib is bigger than the other?

all my ribs on the left side stick out a lot and come up high, but all my ribs on the right side are very low down and don't stick out at all. It has become very noticeable Last year, my left ribs were very painfull but i ignored it and it's not painfull anymore, but just recently i noticed this and i don't know if it's something i need to soart out or ignore.