Maybe you've got a preschooler ready to enter kindergarten and suddenly baby fever hits, but as the months pass, the pregnancy tests keep coming back negative.

Or maybe you had your first baby at a young age and now you're in your mid-30s with a new partner and ready to add to the family, but your egg supply just isn't what it used to be. Maybe a traumatic birth left you with internal scar tissue that was discovered only when you started trying for the next baby.

Whatever the case, your attempts at getting pregnant are coming up short, and you're left to manage the mental, physical and emotional challenges of secondary infertility.

The basics of secondary infertility

Just because you have one or more children running around your house doesn't necessarily mean it'll be easy to get pregnant again when you want to expand your family.

Essentially, that's what secondary infertility is.

"Secondary infertility is diagnosed when a patient has a prior history of pregnancy but currently has infertility: 12 months of attempted conception with no pregnancy in patients under 35 years, or six months of attempted conception in patients over 35 years," explained