Week-by-Week Pregnancy
Here’s your one-stop guide to every week of pregnancy. Click on any week for a more detailed description of your pregnancy.

Week 1

You’re actually not pregnant yet—the clock starts ticking from the first day of your last period. So even though pregnancies are said to be 40 weeks long, you only carry your baby for 38 weeks.

Read more about being 1 week pregnant.

2-weeks-pregnant-fertilizationWeek 2

Ovulation occurs. For the best chances of getting pregnant, have sex one to two days before your expected ovulation date.

Read more about being 2 weeks pregnant.

3-weeks-pregnant-fertilization.jpgWeek 3

You may be pregnant but probably won’t have any symptoms.

Read more about being 3 weeks pregnant.

4-weeks-pregnant-fetus.jpgWeek 4

Positive test: You’re pregnant! You may be starting to feel bloated, crampy, tired and moody, and experiencing sore breasts, nausea/vomiting and a frequent need to pee. But don’t worry if you’re not—that’s normal.

Read more about being 4 weeks pregnant.

5-weeks-pregnant-fetusWeek 5

Though the embryo is only about the size of a grain of sand, the heart is pumping blood, most other organs have begun to develop, and arm and leg buds appear. You may be starting to experience “pregnancy brain.”

Read more about being 5 weeks pregnant.

6-weeks-pregnant-fetusWeek 6

Now that the pregnancy is feeling more real, you might be worrying about miscarriage.

Read more about being 6 weeks pregnant.

7-weeks-pregnant-fetusWeek 7

The embryo doubles in size but is still less than a half-inch long. As your pregnancy hormones increase, morning sickness may be worsening. Or, you may be ravenous 24/7.

Read more about being 7 weeks pregnant.

8-weeks-pregnant-fetus.jpgWeek 8

Your doctor may look or listen for the baby’s heartbeat with an ultrasound. Once you see or hear it, your miscarriage risk drops to about 2 percent. He’ll also give you an official due date—though very few women actually deliver on that day.

Read more about being 8 weeks pregnant.

9-weeks-pregnant-fetus.jpgWeek 9

The pressure of your growing uterus on your bladder may cause you to leak small amounts of urine.

Read more about being 9 weeks pregnant.

10-weeks-pregnant-fetusWeek 10

Your inch-long baby is now called a fetus. While the icky side effects of pregnancy may be starting to abate, your anxiety about having a healthy baby might be increasing.

Read more about being 10 weeks pregnant.

Follow your baby’s development from a tiny mass of cells through to a fully developed baby. Our illustrations show how your baby is growing inside your womb (uterus).