After conceiving a child naturally, it can come as a surprise when you start trying for a second (or third..) and things don’t happen as quickly as you expected. Though it isn’t talked about as much as it should be, secondary infertility is relatively common — about 12% of women will experience secondary infertility in their lifetime, according to the U.S. Centers for Disease Control and Prevention (CDC) (1). Even those who got pregnant right away with their first (or second, or third) child can find themselves facing fertility issues when they start trying for another baby.