I had second thoughts about running it, as well as third and fourth and fifth thoughts, not only was I unsure whether my body would heal quickly enough from an unplanned C-section, butI was also worried that training and racing would diminish my already-meager milk supply. Fortunately, I was able to pump around the clock for a couple of months to trick my body into making more milk, and I actually had an amazing oversupply by the time I needed to race.