Pregnancy Week 5
Your pregnancy is becoming more established this week. The embryo is growing rapidly, and important structures are beginning to form. Your pregnancy hormones are also rising, which may make early pregnancy symptoms more noticeable.
Your Baby This Week
Early Embryo Development
By week 5, the developing baby is now considered an embryo. It is still extremely small, but rapid changes are taking place as the foundations for the brain, spinal cord, heart, and other organs begin to develop.
The embryo is attached to the uterine lining and receives support through the developing placenta.
At week 1, your baby is not yet developing inside your womb. You are technically not pregnant yet. This week marks the first day of your last menstrual period (LMP), which is used to calculate your due date.
The Neural Tube Begins to Form
One of the most important developments this week is the formation of the neural tube, which will eventually develop into the baby’s brain and spinal cord.
Tiny but Developing
The embryo is about the size of a sesame seed. Although it is still very small, the foundations of several major body systems are beginning to form.
Your Body This Week
Your body is adapting to pregnancy as hormone levels continue to rise.
Rising hCG
Levels of human chorionic gonadotropin (hCG) increase rapidly during early pregnancy. This is the hormone detected by home pregnancy tests.
Early Pregnancy Symptoms
You may begin noticing fatigue, breast tenderness, nausea, increased urination, or changes in your appetite. However, every pregnancy is different.
Hormonal Changes
Increasing levels of progesterone and estrogen help maintain the uterine lining and support the developing pregnancy.
Emotional Changes
Hormonal changes and the realization that you may be pregnant can bring a mixture of excitement, worry, and other emotions. These feelings are common during early pregnancy.
Tips for week 5
- If you have not already done so, take a pregnancy test if your period is late.
- Schedule your first prenatal appointment.
- Continue taking a prenatal vitamin containing 400 mcg of folic acid.
- Avoid alcohol, smoking, and recreational drugs.
- Limit caffeine to 200 mg or less per day during pregnancy.
- Eat regular, balanced meals and keep healthy snacks available.
- Drink plenty of water throughout the day.
- Get enough rest, especially if you are feeling unusually tired.
- Check with your healthcare professional before taking medications or supplements.
Nutrition This Week
Your nutritional needs become especially important as your baby’s early development begins.
Folate Rich Foods
Healthy Fats
Protein Rich Foods
Fruits & Vegetables
Calcium-Rich Foods
Stay Hydrated
Nutrition This Week
Continue taking your prenatal vitamin every day. Folic acid is particularly important during the early weeks of pregnancy because the neural tube is developing during this period.
Frequently Asked Questions
What is happening to my baby at Week 5?
Your baby is now an embryo and is developing rapidly. The foundations of the brain, spinal cord, heart, and other major structures are beginning to form.
How big is my baby at Week 5?
The embryo is still very small about the size of a sesame seed.
What symptoms can I have during Week 5?
You may experience fatigue, breast tenderness, nausea, increased urination, food aversions, or mood changes. Some people may have very few symptoms or none at all.
Can I have an ultrasound during Week 5?
An ultrasound may be performed in certain situations, but it can still be too early to see much detail. Depending on the timing, a gestational sac may be visible, while the embryo and heartbeat may not yet be clearly detectable.
When should I have my first prenatal appointment?
It is a good idea to contact your healthcare professional after a positive pregnancy test to arrange prenatal care. The timing of the first appointment varies depending on your healthcare provider and individual circumstances.
Week by Week
Explore your pregnancy journey week by week.
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