Some people's immune systems produce antibodies that fight parts of their own bodies. These aren’t always a big deal. But sometimes they can contribute to stroke or miscarriage risk.

Having a heart attack while pregnant is highly unlikely, but pregnant women are still at three to four times greater risk for an attack compared to non-pregnant women of the same age.

Having a baby classified as small for his or her age might mean more than tiny onesies . It's also an indication that mom should watch out for later developing heart disease.

Babies unable to grow to the size they're genetically supposed to reach suffer from intrauterine growth restriction, a risk factor for future cardiovascular problems.