Mostly because she is having twins. So far (just passed 11 weeks and mother and kids are doing great) it seems like everything is going along fine. However, she is a little on the small side and does not have much space between her ribs and pelvis. Her mother looked like she "swallowed a beach ball" by 7 months with both her pregnancies, so we are anticipating something similar. We have only seen a nurse practitioner because our hospital takes for - e - ver to get an appointment, so we hope these are just standard noises.