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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5 Weeks Pregnant

Five weeks is a common time when moms-to-be find out they’re pregnant (though some won’t discover it for a couple more weeks still). That’s because by now you probably realized you’ve missed your period. Plus, heightened pregnancy hormone levels may be giving you some symptoms that are tough to ignore, like sore breasts, nausea and fatigue. (Those same hormones are the ones your pregnancy test picked up to give you a positive result.) These are just the beginning of the slew of changes your body is about to go through. No need to worry though: many moms-to-be say the first trimester was the toughest part of pregnancy, so you’re probably getting the rough stuff out of the way early. In the meantime, be sure to take care of yourself and get plenty of rest, eat right and test out some ways to deal with the queasies (eating small, more frequent meals is one good one). Maybe even ask your partner for a massage. After all, you might not have a big bump, but at five weeks pregnant, your body is working fast and furiously to grow baby, so you deserve a little TLC, right?

your baby's the size of an appleseed!
Your embryo is now measurable -- though at week five, it's a wee .13 inches -- and she's gearing up for much more growth. In fact, in the next week, she'll almost double in size. Grow baby grow!

your baby at 5 weeks
  • The embryo doesn't look like much more than a tadpole right now, but at five weeks, she's already starting to form major organs (heart, stomach, liver, kidney) and systems (digestive, circulatory, nervous).

pregnancy symptoms at 5 weeks

your must-do's
your nice-to-do's
  • Start a pregnancy diary, to track your thoughts, feelings and baby's growth and movement.
  • Join your birth club on The Bump to talk to other moms-to-be with your due date.

watch: your bump, week 5

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