4 Weeks Pregnant

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Here's what's happening during Week 4 of your pregnancy:

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Your Growing Baby

The fertilized egg (known as a zygote) implants in the wall of the uterus; the placenta and umbilical cord begin to form.

Your Growing Belly

The fertilized egg burrowing into you uterus can make you shed a few spots of blood. Any pregnancy symptoms you have will be barely, if at all, noticeable. If you're very sensitive, you may notice feelings of fatigue, queasiness, bloating, and breast tenderness, and changes in your skin and hair. If you take a super-sensitive test, such as a blood test at your doctor's office, it's possible to get a positive result a week after conception. If you test at home this early, know that it's possible to get a false negative at this stage.

Tips & To-Do's

Too Early To Test?

During the first few weeks, your body is working 24/7 behind the scenes to support the pregnancy, and fatigue is a normal response. When the fertilized egg implants into the plush lining of the uterus about six to 12 days after conception, spotting—light vaginal bleeding—may occur. Your breasts may be extra tender as early as a week or two after conception. Here are nine subtle clues that you might be pregnant >>

Things to think about this week

Sure, what you eat during pregnancy is vital, but that doesn't mean you have to be afraid of everything you put in your mouth or force yourself to eat foods you don't like. Simply stick to these 10 basic do's and don'ts >>



 

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Pregnancy Milestones:

Below are some of the most important milestones of your pregnancy. Click on any week to read more, or view our Week-by-Week Pregnancy page to see your pregnancy at-a-glance.

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Week 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.

 

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Week 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.

 

 

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Week 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.

 

 

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Week 15: The "window of opportunity" for many important screening and diagnostic tests opens this week, should you decide to undergo them.  Read more about being 15 weeks pregnant.

 

 

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Week 16: Sometime between 16 and 22 weeks, you'll start to feel your baby move.  Read more about being 16 weeks pregnant.

 

 

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Week 29: The basketball-sized lump in your belly may be inhibiting shoe tying, leg shaving and the like. The fetus is increasingly sensitive to light and sound.  Read more about being 29 weeks pregnant.

 

 

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Week 36: The baby may drop lower into your pelvis in preparation for delivery. This should make it easier to breathe—yet your pee breaks will become ever more frequent.  Read more about being 36 weeks pregnant.

 

 

Click here to read more about every week of pregnancy on our Week-by-Week Pregnancy page.