Welcome back to Healthful Woman for a round of "What Does the Fox Say?" with host Dr. Nathan Fox. Today, we cover questions regarding whether there is a correlation between breastfeeding and miscarriage, whether or not a mother being a carrier for cystic fibrosis could have any negative impacts on the baby in the womb, mobility following an epidural, natural variation in gestation length, whether or not someone with half a uterus can deliver vaginally, and maternal CMV infection in the first trimester.