Your baby this week
20 weeks pregnant

Your baby now

Listening to baby

Someone else may be able to hear the baby's heartbeat by pressing his or her ear to your abdomen. The baby's position (as well as that of your placenta) will determine how well it can be heard, and it may decide to move away from this intrusion. Keep trying -- and remember -- the baby's heart beats a lot faster than yours (about double the speed).

Click here for our interactive tool to help you find out how fast your baby's heart is going.

10 months?

According to most dating methods, pregnancy lasts approximately 280 days. Lunar months are considered to be roughly 28 days (4 weeks) — and 280 divided by 28 breaks into 10 approximate lunar months.

If you really want to get technical: A sidereal month is 27.32 days, a synodic month is 29.53 days, and an anomalistic month is 27.55 days. See why they decided to round?

Read more: Is it true that pregnancy really lasts 10 months?

Get a strong core

Fitness ballBy far, the most important area of your body to strengthen and tone before, during, and after pregnancy is your torso. Without strong abdominal and back muscles, you risk injuring your back and developing poor posture throughout the rest of your pregnancy. Bad habits are hard to break!

Just by sitting on a fitness ball, you engage all of the muscles that support the growing uterus. Try to sit on the ball as much as you can throughout the day to strengthen your core. If you feel any back discomfort, that means your muscles are tired and need to rest.

Many people use fitness balls to sit at their desk or to watch television. Be creative! Read on for more information about using fitness balls.

All in the family

Many families consider birth to be a family event, including having children present in the delivery room. If you’re considering this option, childbirth educator and doula Ami Burns shares tips to help the process go smoothly for you and your child.

>>> Siblings at childbirth: Age-appropriate tips

Mom with son

Did you know?

Expectant mamas should limit their usage of toxic household cleaning products. A study shows that household cleaning products are linked to childhood asthma. The study, published in European Respiratory Journal, reports that expectant women who use many household cleaning products may be putting their child at an increased risk of developing asthma as a youngster. Read more here.

Photo galleries