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.

More about pregnancy week-by-week Less about pregnancy week-by-week

baby registry

need to buy a gift?

Find baby registries (at top retailers!) and websites with one easy search.

what's hot around the web

baby websites

you asked...

Q&A: Traveling during second trimester?

I have a trip planned for the second trimester that includes a flight and a long car ride. What can I do to stay safe and comfortable?

Re: I have a trip planned for the second trimester that includes a flight and a long car ride. What can I do to stay safe and comfortable?

The Bump Expert

The second trimester is great for traveling, as long as you take a few precautions. Here are a few tips to keep yourself (and baby!) safe and comfy on the road and in the skies.

Move it!
Circulation is the key -- be sure to keep moving. Get up and walk around once an hour, and wiggle or massage your legs every few minutes while seated. (Same goes for anytime you’re seated for an extended period throughout your pregnancy.) Keeping the blood flowing reduces risk of varicose veins, thrombosis (blood clots) and swollen feet and ankles.

Buckle low
Wear your seatbelt across the thighs and below the belly, where it's safest and most comfortable.

Kick up your heels
Propping your feet up also helps blood flow -- try using a carry-on item or available seat.

Drink up
Avoid travel-induced dehydration and weariness by drinking lots of non-caffeinated fluids.

Fly up front
To stay comfortable, request an aisle seat on the front half of the plane. This will give you a smoother ride, and make it easier to get up and walk around.

Get comfy
Try a back-support cushion or pillow. When traveling by car, push your seat back as far as possible to get more leg room.

Paula Kashtan


My Pregnancy Calendar
Count down to delivery with your pregnancy calendar.
baby names
Browse 1000s of baby names in our Baby Namer tool.
pregnancy tickers
Create your own pregnancy ticker.
how big is baby
From poppyseed to papaya, see how baby grows each week.

>> See all tools