This woman’s neighbors must have had quite a shock! One New Jersey mom recently gave birth to a baby boy in her front yard. And get this: She didn't know she was pregnant!

Barnegat, New Jersey, police say two officers arrived just after Elizabeth Whitehead gave birth to her baby on the grass. Finding the newborn without a pulse and not moving, they immediately began CPR.

Once an ambulance arrived, medical staff were able to stabilize the baby. The infant was then admitted to the Jersey Shore Medical Center for further treatment. Whitehead, who said she didn't even realize she was pregnant, was treated and released from the hospital.

The Lacey Patch reports that 21-year-old Whitehead already has a 9-month-old son, and that she chalked up what turned out to be early labor pains to menstrual cramps. When the pain became unbearable, she decided to go to the hospital. The pain was so intense she only made it as far as the front yard, then called 911.

Dr. Lori Gawron, an obstetrician and gynecologist at Northwestern University’s Feinberg School of Medicine, who did not treat Whitehead, told ABC News that some women mistakenly believe that they can’t get pregnant in the weeks immediately following birth.

“Moms don’t think how quickly after they deliver they can resume ovulation,” she said. “They can start ovulation 25 days after having a baby.”

Whitehead said that she took two pregnancy tests, both of which came back negative. Her son was born at 24 weeks.

An additional complication for new moms is that breastfeeding severely decreases the chance of a woman becoming pregnant, although some women can spontaneously ovulate, especially if they are not only breastfeeding but supplementing with formula.

Associate Professor of reproductive medicine at University Hospitals Case Medical Center in Cleveland, Ohio, Dr. Karen Ashby (who also did not treat Whitehead) told ABC News that she’s had patients arrive at her office pregnant a mere six weeks after giving birth. According to Ashby, “If they’re not getting their period they think they can’t get pregnant, which isn’t true.”

Source: ABCLacey Patch

Want more Wetpaint Moms? Like us on our Facebook page or follow us on Twitter!