i had really bad rib pain with my DD late in pregnancy - her butt was pushing on my ribs on the right side -when i asked my OB mentioned that my ribs were likely bruised and that she had seen fractured ribs before from babies like that..
with my DS i carried him MUCH lower and he never hurt my ribs ..
i would def. ask about it - in my case it was obviously caused by the baby but you'd want to rule out other causes..
- Staci, Mommy to Mollie (3/06), Jamie (5/08), Annie (9/10), Bently (2/13) , and Robin (11/15)