I treat many women pre, during and post pregnancy and always encourage cardiovascular and stabilization exercises. Strengthening your pelvic floor and spinal stabilizers helps reudce pain, ease childbirth, and overall mental and physical health. The following article discusses how it also benefits your baby and sets him/her up for a healthier life too. It is never to early to start thinking about our childrens’ well being too.
http://well.blogs.nytimes.com/2010/04/05/execise-during-pregnancy-lowers-babys-weight/