I am quite certian that this little baby is practicly sitting on my tailbone! If I sit for long when I get up every other step I take hurts right at the base of my spine. The only time I don't have the back pain, or have less, is when I get really constipated. I think the build up cushions my poor tailbone! Also, my internal organs are all pushed up so I look pregnant on the top half of my abdomen, but the bottom half where the baby actually is doesn't stick out but just alittle!