Pregnancy Week by Week

Get a window on what’s happening in your pregnancy, week by week. From week four to week 42, your baby is experiencing a miraculous transformation from a clump of cells to a fully formed (and totally cute) newborn. Just imagine, as early as five weeks, your baby is already starting to form major organs (heart, stomach, liver, and kidneys) and systems (digestive, circulatory, nervous). By eight weeks, your raspberry-sized womb-mate is moving her arms and legs. At the beginning of your second trimester (week 14), your wee one is sucking his thumb. By week 28, the first week of the third trimester, baby (now as big as an eggplant) is prepping for breathing, developing his eyesight and packing on pounds in anticipation of life outside the womb. Each week is a new miracle. Less miraculous is how a mom-to-be may feel. Pregnancy Week-by-Week charts your baby’s development but also lets mom know what she might be feeling during each week of her pregnancy. Pregnancy week by Week includes everything mom needs to know to feel a sense of control over her pregnancy. Each week offers a complete guide to what you might feel, your must-do’s, your nice-to do’s, and answers and advice on everything pregnancy-related. Plus each week’s guide offers tips on maintaining a healthy and comfortable pregnancy from strategies on coping with pregnancy symptoms (morning sickness anyone?) to ideas for healthy eating, and pointers on talking to your OB. Let us guide you along your pregnancy, week by week.

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40 Weeks Pregnant

Happy due date -- you made it! Since 40 weeks was the deadline you set for baby, you’ve probably already made sure the bassinet is made up, the car seat is installed and your hospital bag is by the door. Now, do some little things you might have forgotten, like making sure your cell phone is fully charged before you go to bed and the car is filled with gas. Some moms-to-be also choose to put a waterproof mattress cover on their bed, just in case their water breaks in the middle of the night. It’s not a must-do, but it’s not a bad idea either, especially because once baby comes, there might be other messes on or around your bed. Week 40 can be mentally rough, since you’ll probably be constantly wondering when baby will decide to finally make his entrance and question every twinge you have. Try not to stress, and rest assured that baby will arrive when he’s ready -- and your body will give you the right signals that it’s time.

Your baby's the size of a jackfruit!
In month nine, the average fetus is about 6.2 to 9.2 pounds and measures about 18.9 to 20.19 inches (wow!). But you really won't know exactly how big your baby is until his birth.

your baby at 40 weeks
  • He's continuing to grow hair and nails.
  • And he's keeping up that lung development, too.

pregnancy symptoms at 40 weeks

your must-do's
your nice-to-do's
  • We know it's tough, but try to get plenty of rest!
  • Read up on induction, in case your doctor orders one.

watch: your bump, week 40

Reminder: Medical info on The Bump is FYI only and doesn't replace a visit to a medical professional.