Week 5
of pregnancy

Fetal development

Height
~0.06 in
Weight
Weekly highlights
- 1Baby’s Development. Major developments are underway: the placenta and early umbilical cord are forming, and the neural tube is beginning to shape into your baby’s brain and spine. The heart appears as a small bulge and may begin beating soon—sometimes detectable as early as next week.
- 2Bodily Changes & Symptoms. You might start to feel more typical early pregnancy symptoms, including nausea (or morning sickness), bloating, breast tenderness, frequent urination, or mood swings. Fatigue and mild cramping are also common. There’s still no baby bump yet, and some people feel little to no symptoms.
- 3Health & Wellness. This is a good time to confirm your pregnancy if you haven’t already. Home tests may detect hCG, though false negatives are still possible—retest if needed. Call your healthcare provider if you experience any unusual pain, heavy bleeding, or symptoms that don’t feel normal to you.
- 4Tips & To-Dos. Continue your daily prenatal vitamin with at least 400 micrograms of folic acid. Eat a well-rounded diet and avoid raw or unpasteurized foods, alcohol, and high-mercury fish. Schedule your first prenatal appointment and ask your provider about activity restrictions, like lifting or changing the litter box.
Checklist for week 5
- Read up on how to choose a prenatal care provider if you haven't chosen one already.
- Schedule your first prenatal appointment. Your healthcare provider will be able to fill you in on the specifics of your care, but you can read up on prenatal care to get a general idea of what’s coming.
- Find out who to call if your healthcare provider is unavailable or if it’s after hours and you have a medical concern.
- Save your provider’s number to your phone and have emergency contact numbers stuck on your fridge and saved to your contact list, too.
- Be ready to feel anxious or excited, worried or ecstatic—all normal reactions to becoming pregnant.
- Soothe any cramps and backaches with a warm bath or a nap.
- Cut out smoking and alcohol if you haven't already.
- Although rare, it’s a good idea to read up on the signs and symptoms of an ectopic pregnancy just in case.

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Key Takeaways
Even though it’s still early in your pregnancy, a lot happens at 5 weeks, both for you and your baby. The placenta and the beginnings of the umbilical cord are developing, and you might feel a pregnancy symptom or two. Keep reading to learn more about what happens at 5 weeks pregnant, what symptoms to anticipate, and what changes to make to support a healthy pregnancy.
Highlights at 5 Weeks Pregnant
Check out what's going on and what to do during your fifth week of pregnancy:
Confirming Your Pregnancy at 5 Weeks
Can you be 5 weeks pregnant and test negative? This is a common question, as confirming your pregnancy is likely something you’ll want to do as soon as possible! Home pregnancy tests work by detecting levels of the pregnancy hormone hCG, or human chorionic gonadotropin, in your urine, which could be high enough at 5 weeks pregnant. If hCG levels are not yet high enough, you could receive a false negative. Wait a few days and test again before confirming with your healthcare provider.
“If I'm 5 weeks pregnant, what is my due date?” After confirming your pregnancy, this is likely the next question you’ll ask yourself! Again, your healthcare provider is your point person during your pregnancy and can help you determine your due date. In the meantime, try our Due Date Calculator.
How Many Months Is 5 Weeks Pregnant?
Your healthcare provider will refer to your pregnancy in weeks, but it’s common to think in months, too. It gets a little tricky, but at 5 weeks pregnant, you’re usually considered to be in your second month of pregnancy, which typically includes weeks 5 through 8.
5 Weeks Pregnant: Your Baby's Development
When you’re 5 weeks pregnant, important changes are taking place to support your baby’s development. Here's what's happening during your fifth week of pregnancy:
How Big Is a Baby at 5 Weeks Pregnant?
At five weeks pregnant, the embryo is still very small but growing quickly! Picture a small orange seed or a grain of rice. At this stage, your little one could be between about 1/16 of an inch long, with a shape like that of a tiny tadpole.
Your Baby: What Does 5 Weeks Pregnant Look Like?
Look at this visual of your uterus and the gestational sac at 5 weeks for an idea of how your body is creating a comfortable home for your baby during your pregnancy.
5 Weeks Pregnant: Your Symptoms
It’s possible to have a range of common symptoms at 5 weeks pregnant, or symptoms that come and go, or even no symptoms at all! Every pregnancy is different, but early signs that you’re pregnant could include both physical symptoms and emotional changes.
Physical and Emotional Symptoms
These are some of the physical and emotional symptoms you might experience at 5 weeks pregnant:
Symptoms Not to Ignore
The above signs and symptoms are common at 5 weeks pregnant, but nothing you experience should be particularly painful. If you’re feeling pain or observing changes that aren’t normal for you, contact your healthcare provider.
How Big Is a Pregnant Belly at 5 Weeks?
Are you keeping an eye on your belly, wondering if it has gotten bigger? At 5 weeks pregnant, you probably won’t have a baby bump just yet, nor will you notice a darker line, called the linea nigra, on your stomach. Everyone is different, but you might see a bulging belly at around 12 to 16 weeks and the linea nigra closer to 20 weeks.
What Does 5 Weeks Pregnant Look Like?
To help you get a better sense of what your belly might look like at 5 weeks pregnant, check out the visual below:
5 Weeks Pregnant: Things to Consider
It’s still early in your pregnancy journey, but there are plenty of important things to consider, from sharing the news with someone close to focusing on a healthy diet. Check out our lists below.
Lifestyle Changes
Now that you're pregnant, you may need to make some adjustments to make sure you and your baby stay healthy and safe.
Sharing and Learning
Sharing the news with your partner and others is a fun part of being pregnant, and so is looking ahead and learning about pregnancy and parenting. Here are some ideas.
5 Weeks Pregnant: Questions for Your Healthcare Provider
Have you seen your healthcare provider yet? Your first appointment and your subsequent checkups are the perfect time to raise questions and bring up concerns, such as the following:
FAQS AT A GLANCE
It’s quite common to experience nausea, bloating, cramping, or gas pains at 5 weeks pregnant. Consult your healthcare provider if any of your symptoms at 5 weeks pregnant cause a lot of pain or abnormal changes.
How We Wrote This Article The information in this article is based on expert advice found in trusted medical and government sources, such as the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists. You can find a full list of sources used for this article below. The content on this page should not replace professional medical advice. Always consult medical professionals for full diagnosis and treatment.
- American College of Obstetricians and Gynecologists. Your Pregnancy and Childbirth: Month to Month, 6th ed. (Washington, DC: American College of Obstetricians and Gynecologists, 2015).
- Mayo Clinic. Guide to a Healthy Pregnancy, 2nd ed. (Rochester, MN: Mayo Clinic Press, 2018).
- ACOG. “The Rh Factor and How It Can Affect Your Pregnancy.”
- ACOG. “Is It Safe to Dye My Hair During Pregnancy?”
- ACOG. “Listeria and Pregnancy.”
- ACOG. “Bleeding During Pregnancy.”
- American Pregnancy Association. “Lightning Crotch Pain During Pregnancy.”
- CDC. About Physical Job Demands and Reproductive Health
- CDC. About Folic Acid
- Cleveland Clinic. “Linea Nigra.”
- Cleveland Clinic. “First Trimester.”
- Cleveland Clinic. “Hyperemesis Gravidarum Severe Nausea.”
- Cleveland Clinic. “Prenatal Care.”
- Cleveland Clinic. “Bleeding During Pregnancy.”
- Cleveland Clinic. “Round Ligament Pain.”
- KidsHealth. “Pregnancy Week 5.”
- KidsHealth. “Miscarriage.”
- KidsHealth. “Eating During Pregnancy.”
- KidsHealth. “Sleeping During Pregnancy.”
- Mayo Clinic. “Sex During Pregnancy: What's OK, What's Not.”
- Mayo Clinic. “Symptoms of Pregnancy.”
- Mayo Clinic. “Pregnancy and Fish.”
- Mayo Clinic. “Preeclampsia.”
- Mayo Clinic. “Ectopic Pregnancy.”
- Women’s Health. “Body Changes and Discomforts.”
- Women’s Health. “Pregnancy Tests.”











