

As this eMedTV article explains, knowing what to expect in your pregnancy week by week can help you take the necessary steps to ensure your health and your baby's. This page offers detailed information on what happens during each week of pregnancy.
When you're one week pregnant, you're not actually pregnant. As this eMedTV article explains, week one of pregnancy begins with your period. This Web page explains how due dates are calculated and discusses healthy habits to adopt before conception.
At "two weeks pregnant," you're still not actually pregnant. However, you may conceive this week. This eMedTV resource explains how your body prepares for pregnancy at this stage and offers tips on staying healthy during the second week of pregnancy.
When you're 3 weeks pregnant, the egg has been fertilized and is implanted in your womb. This eMedTV segment explains what you and your partner can expect during the third week of pregnancy and outlines how eating well can help ensure a healthy baby.
At 4 weeks pregnant, you will have missed your period. As this part of the eMedTV library explains, you may also experience nausea and fatigue. This article discusses what you and your partner can expect during your fourth week of pregnancy.
By the time a woman is 5 weeks pregnant, the baby has developed a heartbeat of its own. This eMedTV segment explains the baby's development in detail and includes more information on what to expect when 5 weeks pregnant.
When you are 6 weeks pregnant, you are likely still experiencing symptoms like morning sickness. This eMedTV article describes your baby's development during the sixth week of pregnancy and offers tips to help relieve your symptoms.
Symptoms you may experience when 7 weeks pregnant include morning sickness, weight gain, and constipation. This eMedTV article explains in detail what to expect when 7 weeks pregnant and discusses the early symptoms of a multiple pregnancy.
At 8 weeks pregnant, your body is continuing to change. As this eMedTV article explains, your baby is growing, too. This week, your baby's sexual organs are forming, and the arms and legs are taking shape. This page discusses week 8 in detail.
When you are 9 weeks pregnant, your baby is about 1 inch long and weighs about as much as a paper clip. This eMedTV article discusses what you can expect during your ninth week of pregnancy, which may include symptoms such as mood swings.
When you are 10 weeks pregnant, you may experience increased mood swings and additional weight gain. This eMedTV resource discusses weight gain during pregnancy and describes changes in the baby's development in the tenth week of pregnancy.
When you are 11 weeks pregnant, it's important to have another prenatal checkup. As this eMedTV article explains, this doctor's appointment will help monitor both your health and your baby's health. This page covers the eleventh week of pregnancy.
When you are 12 weeks pregnant, your baby's organs are becoming more defined and better developed. This eMedTV resource explains how new developments, such as increased blood supply, affect your body when you are 12 weeks pregnant.
At 13 weeks pregnant, you're in the last week of your first trimester. As explained in this eMedTV segment, symptoms of early pregnancy may subside this week; however, you may experience abdominal pain as the ligaments that hold your uterus stretch.
At 14 weeks pregnant, you are now in your second trimester. As this eMedTV page explains, your nausea should be subsiding, but you now may have constipation. This article discusses changes in your body and your baby's development during week 14.
At 15 weeks pregnant, you may experience abdominal pain, nosebleeds, and changes in your hair and skin. As this eMedTV resource explains, such changes are normal. This article describes what you can expect at 15 weeks pregnant.
When you are 16 weeks pregnant, your baby weighs about 3 ounces and can likely open its mouth and swallow. This eMedTV Web page describes what to expect at week 16 of pregnancy and discusses testing for possible birth defects.
At 17 weeks pregnant, you may be able to feel your baby move inside you. As this eMedTV page explains, your pregnancy should now be showing. This article describes what to expect when you are 17 weeks pregnant.
At 18 weeks pregnant, an ultrasound can help detect any potential problems with your baby's development. This eMedTV segment offers tips for choosing a pediatrician and discusses changes in you and your baby during the 18th week of pregnancy.
When you're 19 weeks pregnant, the baby is beginning to move more and is between 5.2 and 6 inches long. This eMedTV segment discusses the prenatal checkup you're likely to have at this time and includes information about anemia and pregnancy.
When you are 20 weeks pregnant, you may notice that your baby is quite active. As this eMedTV segment explains, you may also notice vaginal discharge at this time, which is normal in most cases. This page covers the 20th week of pregnancy in detail.
When you are 21 weeks pregnant, your weight is probably about to start increasing rapidly. This eMedTV article describes other things to expect at 21 weeks pregnant and explains how low-impact exercise may help ease symptoms of pregnancy.
At 22 weeks pregnant, you may experience sporadic, painless contractions. As this eMedTV resource explains, these are normal. This article describes changes in you and your baby that are likely to occur during the 22nd week of pregnancy.
Once you are 23 weeks pregnant, mood swings, itchy skin, and other symptoms may make it hard to sleep. This eMedTV Web page discusses other things to expect when you're 23 weeks pregnant and explains why you should consider sleeping on your side.
During week 24 of pregnancy, blood vessels in your baby's lungs are forming. This eMedTV page describes the prenatal checkup you'll probably have at 24 weeks pregnant and discusses risks the posed by gestational diabetes.
When you are 25 weeks pregnant, it's important to be aware of the signs of preterm labor, which this eMedTV article describes. This Web page also talks about hemorrhoids, forgetfulness, and other things you can expect during week 25 of pregnancy.
When you are about 26 weeks pregnant, your baby begins to make breathing movements. This eMedTV resource discusses other milestones in your baby's development that may occur in week 26 of pregnancy and provides tips for preparing the baby's room.
At 27 weeks pregnant, you're through your second trimester. However, as explained in this eMedTV resource, there are still physical changes for you to deal with and exciting development ahead for your baby when you're 27 weeks pregnant.
When you are 28 weeks pregnant, your doctor will likely discuss your Rh factor with you. This eMedTV segment explains the complications Rh incompatibility may cause along with other information concerning you and your baby at week 28 of pregnancy.
When you're 29 weeks pregnant, your baby's kicks should be more frequent. As this eMedTV Web page explains, you may also experience heartburn and pelvic pain at 29 weeks pregnant. This article looks at what you can expect during week 29 of pregnancy.
At 30 weeks pregnant, you may experience symptoms such as constipation, swelling, and indigestion. This eMedTV resource discusses how to alleviate these symptoms and includes information about your baby's development in week 30 of pregnancy.
At 31 weeks pregnant, you may want to think about breastfeeding versus bottle feeding. This eMedTV article discusses what you can expect during week 31 of pregnancy, such as backaches, breathlessness, and Braxton Hicks contractions.
You and your partner may want to discuss a birth plan when you are 32 weeks pregnant. This part of the eMedTV Web site provides a list of questions to help you with your birth plan. This page also tells you what you can expect during week 32.
By the time you are 33 weeks pregnant, your baby has probably also moved into his or her birth position. This eMedTV resource explains what you can expect in week 33 of pregnancy and describes your baby's development during this time.
At 34 weeks pregnant, you should choose a doctor for your child, if you haven't done so already. This eMedTV article provides suggestions to help you in your search and discusses what to expect when you're 34 weeks pregnant.
By the time you are 35 weeks pregnant, your baby's lungs are almost fully developed. As this eMedTV segment explains, you may feel uncomfortable and have trouble sleeping this week. This page describes other things to expect at 35 weeks pregnant.
At 36 weeks pregnant, you'll probably start having weekly checkups. This eMedTV article discusses physical and emotional changes that you may experience during week 36 of pregnancy.
When you are 37 weeks pregnant, your baby is about 6.5 pounds and gaining half an ounce of fat a day. This eMedTV Web page provides a list of what to bring with you to the hospital and discusses what you can expect during this week of pregnancy.
When you're 38 weeks pregnant, your baby is approximately 19 to 21 inches long from head to toe. This eMedTV resource discusses your baby's development at week 38 of pregnancy and explains false labor, real labor, and prelabor.
You are 39 weeks pregnant and, as this eMedTV resource explains, you can go into labor at any time. This page provides information on what to expect this week, as well as what you should do if you think your water has broken.
You are 40 weeks pregnant, and you may deliver your baby before the week is out. This segment of the eMedTV archives explains what to expect after the birth of your baby.
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