I will try my best to answer your query.
Mainly occurring in the third trimester, it can be more painful when sitting. Rib pain
is caused from the uterus
pressing into the abdomen, squashing your ribs, as well as baby kicking or punching the area.
The only real ways to help here are to make yourself as comfortable as possible by wearing lose fitting clothes and supporting yourself with cushions when lying down. The pain will likely subside when baby drops (into your pelvic cavity
) in preparation for birth.
Visit OBG specialist if the pain is intense.
Hope my answer will be helpful for you.