Hi Sacha,
You KNOW what to do about the exercise, so do it!!
But I wanted to address the point about babies. The MOST important thing any mother can do for her child is to be healthy and well-balanced. There is nothing more important. A child should not be the cause of her mother's martyrdom. All that does is skew the child's worldview about selfworth and love. Healthy mamas make healthy kiddos. So when you are a mother, continue to see your physical and mental health as important. They are so very very important. Your kid will see you as healthy and well rounded and realize that he or she is part of your life, but not the center of the entire universe. Of course we would all die for our kids, but that doesn't mean we should slowly kill ourselves out of a misplaced sense of martyrdom.
Be healthy, mamas!!!!