Pregnancy • Weeks 17–20
Pregnancy Fifth Month: Baby Development, Symptoms, Diet & Care
The fifth month covers weeks 17–20, a period when fetal movement may become noticeable and the mid-pregnancy anatomy scan is usually approaching. Learn about baby development, symptoms, nutrition, activity and antenatal care.
Quick Answer: What Happens in the Fifth Month of Pregnancy?
The fifth month is commonly described as weeks 17–20. The fetus continues growing and developing, movement becomes more coordinated, hearing develops further and the skeleton continues to harden. Many people begin noticing fetal movement during this period, although the timing varies. The detailed mid-pregnancy or anatomy ultrasound is generally performed around 18–22 weeks, depending on the pregnancy-care schedule.
What Happens During the Fifth Month of Pregnancy?
Weeks 17–20 are an important part of the second trimester. The fetus continues to grow, fetal movements become more noticeable for many people, and pregnancy-related body changes become easier to see and feel. Your experience may differ from another person's pregnancy, so symptoms should be interpreted in the context of your individual care.
Baby Development
The fetus continues rapid growth. Hearing and other sensory functions develop, the nervous system matures and movements become more coordinated.
Fetal Movement
Many people begin feeling fluttering, bubbling or rolling sensations between 16 and 24 weeks. First-time parents may notice movement later.
Baby Development at 17, 18, 19 and 20 Weeks
Week 17: The fetus continues growing quickly. Fingernails develop, fingerprints are formed and the baby can move the eyes while the eyelids remain closed.
Week 18: Hearing, swallowing and sucking reflexes continue developing. The baby moves actively, although you may or may not feel those movements yet.
Week 19: The fetus continues gaining weight and developing body systems. Many people begin recognizing fetal movement around this stage, but timing varies.
Week 20: The pregnancy reaches approximately the halfway point. Vernix begins covering the skin and the anatomy scan is commonly performed around this stage.
Fifth Month Pregnancy Symptoms: Weeks 17–20
As the uterus grows and pregnancy progresses, new symptoms can appear even when early-pregnancy nausea is improving.
Growing Bump
The uterus rises as pregnancy progresses, making the pregnancy more visible and sometimes affecting posture, sleep and comfort.
Round-Ligament Discomfort
Stretching or pulling sensations at the sides of the abdomen can occur as supporting tissues adapt to the growing uterus.
Digestive Changes
Constipation, bloating, indigestion and heartburn can continue during the second trimester.
Other Changes
Headaches, leg cramps, breast changes, skin pigmentation, nasal symptoms, dizziness or swelling can occur in pregnancy.
Baby Movement at 5 Months Pregnant
Fetal movement is often one of the most noticeable changes during this period. The NHS advises that people generally begin to feel their baby move between 16 and 24 weeks; if this is a first pregnancy, movement may not be felt until after 20 weeks. Early movements can feel like fluttering, bubbling or rolling.
Important: There is no universal daily number of movements to count. Once you begin to recognize your baby's usual pattern, a noticeable reduction or change in movement should be discussed promptly with your maternity or obstetric care team.
The 18–22 Week Anatomy Scan
The mid-pregnancy anatomy scan is one of the major assessments associated with the fifth month. It is generally offered around 18–22 weeks, although local protocols and individual circumstances can affect timing. The scan examines fetal structures and development in detail.
| Assessment | What it may evaluate | Typical timing |
|---|
| Fetal anatomy | Brain, spine, heart, abdomen, face and limbs | Usually around 18–22 weeks |
| Fetal growth | Measurements and growth relative to gestational age | During the anatomy scan and other scans when indicated |
| Placenta and pregnancy structures | Placental location and other visible pregnancy structures | During ultrasound assessment |
| Antenatal assessment | Maternal symptoms, blood pressure, urine and other checks according to the care plan | At scheduled visits |
The purpose of the anatomy scan is medical assessment of fetal development. Ultrasound cannot identify every condition, and a normal scan does not guarantee that every future health issue will be absent.
Fifth Month Pregnancy Diet: What to Eat
Continue the balanced eating pattern established earlier in pregnancy. Nutrient needs remain important as the fetus grows and maternal blood volume and other pregnancy-related changes continue.
- Protein: eggs, dal, beans, lentils, paneer, yogurt, fish or other suitable protein sources.
- Iron: leafy greens, legumes, meat where appropriate and supplements when prescribed.
- Calcium: pasteurized milk, curd, paneer and other calcium-rich foods.
- Fruits and vegetables: choose a variety of washed produce for fiber and micronutrients.
- Whole grains: oats, whole-wheat foods, brown rice and other high-fiber choices.
- Fluids: drink regularly, particularly in hot weather or when activity increases.
Foods and Substances to Avoid
- Avoid alcohol and tobacco exposure.
- Avoid raw or undercooked meat, eggs and seafood.
- Avoid unpasteurized milk and dairy products.
- Follow safe food storage, preparation and hand-hygiene practices.
- Discuss caffeine limits, herbal products and supplements with your clinician.
Exercise and Daily Activity at 5 Months Pregnant
For many people with uncomplicated pregnancies, appropriate moderate activity can continue. Walking is a practical option, while other activities should be chosen according to your fitness level and medical advice.
- Stay hydrated and avoid overheating.
- Use comfortable footwear and avoid activities with a significant risk of falling or abdominal trauma.
- Warm up gradually and listen to your body.
- Follow any exercise restrictions given by your obstetrician.
- Stop activity and seek medical advice if you develop concerning symptoms.
Fifth Month Pregnancy Do's and Don'ts
Do's
- Attend scheduled antenatal appointments.
- Plan the 18–22-week anatomy scan.
- Take prescribed prenatal supplements.
- Eat a varied, balanced diet and stay hydrated.
- Stay active at a level considered safe for your pregnancy.
Don'ts
- Do not drink alcohol or smoke.
- Do not self-medicate.
- Do not stop prescribed medicines without medical advice.
- Avoid raw, undercooked or unpasteurized high-risk foods.
- Do not ignore bleeding, fluid leakage, severe pain or concerning changes in fetal movement.
Common Myths About the Fifth Month of Pregnancy
Myth: Everyone feels the baby move by 20 weeks.
Fact: Movement can begin between 16 and 24 weeks, and first-time parents may notice it later. Timing varies between pregnancies.
Myth: A normal anatomy scan guarantees a completely healthy baby.
Fact: The scan evaluates many important structures but cannot detect every condition.
Myth: Pregnancy means you should avoid all exercise.
Fact: Many uncomplicated pregnancies can include appropriate physical activity, but recommendations should be individualized.
Myth: You should eat twice as much food.
Fact: Pregnancy nutrition focuses on adequate nutrients and overall dietary quality rather than simply doubling portions.
When to Seek Medical Care During the Fifth Month
Contact your obstetrician or seek urgent medical assessment for symptoms that are severe, sudden, worsening or unusual for you.
- Vaginal bleeding
- Fluid leaking from the vagina
- Severe or persistent abdominal or pelvic pain
- Severe headache, vision changes or sudden marked swelling
- Fever or feeling acutely unwell
- Fainting or severe dizziness
- Persistent vomiting with inability to keep fluids down
- A noticeable reduction or change in fetal movement after you have established a usual movement pattern
Pregnancy warning signs should be assessed rather than diagnosed at home.
Fifth Month Pregnancy Care in Hyderabad
My Health Hospitals provides obstetric and gynecology services at its Kukatpally and Tarnaka branches. Antenatal care should be individualized according to gestational age, medical history, screening results and pregnancy risk factors.
Obstetrics & GynecologyAntenatal Care
Dr. Swetha Reddy
Obstetrician & Gynecologist
Pregnancy Fifth Month – FAQs
The fifth month is commonly described as weeks 17 to 20. Month-by-month descriptions can vary slightly, so your obstetrician should use gestational age in weeks when planning care.
The fetus continues rapid growth and movement. Hearing develops further, the nervous system matures, the skeleton continues to harden, and the baby develops more coordinated movements.
Common symptoms can include a growing bump, round-ligament discomfort, constipation, bloating, heartburn, headaches, leg cramps, breast changes, skin pigmentation and increasing awareness of fetal movement.
Yes. Many people begin feeling fetal movement between 16 and 24 weeks. If this is a first pregnancy, movement may not be noticeable until after 20 weeks.
The mid-pregnancy or anatomy scan is usually performed around 18 to 22 weeks. It evaluates fetal anatomy and development and is an important part of routine prenatal care.
The scan can assess structures such as the brain, spine, heart, abdomen, face and limbs, as well as growth and other features that can be evaluated by ultrasound.
Ultrasound may sometimes show fetal sex depending on gestational age, fetal position, image quality and local practice. The primary purpose of the anatomy scan is assessment of fetal anatomy and development.
Continue a varied diet with protein, whole grains, vegetables, fruits, calcium-rich foods, iron-rich foods and adequate fluids. Continue supplements recommended by your clinician.
Avoid alcohol and tobacco, raw or undercooked animal foods, unpasteurized products and foods with poor food-safety practices. Discuss caffeine and supplements with your pregnancy-care clinician.
For many uncomplicated pregnancies, walking and other appropriate moderate activity can be continued. Exercise should be individualized if your clinician has identified a pregnancy complication or restriction.
Mild intermittent discomfort can occur from stretching ligaments, constipation or other common pregnancy changes. Severe, persistent or worsening pain needs medical assessment.
Heartburn can occur during pregnancy as hormonal and physical changes affect digestion. Smaller meals, avoiding personal trigger foods and remaining upright after eating may help; ask your clinician before taking medicines.
There is no single target for every pregnant person. Recommended total pregnancy weight gain depends largely on pre-pregnancy BMI, whether the pregnancy is singleton or multiple, and individual health factors.
Comfort and individual circumstances vary. As pregnancy progresses, your clinician can advise on sleep positioning. If you become uncomfortable in a position, changing position is reasonable.
Yes, scheduled antenatal care remains important. Around this stage your clinician may review symptoms, blood pressure, urine or other assessments and discuss the anatomy scan and future pregnancy care.
Movement begins at different times. Many people feel movement between 16 and 24 weeks, and first-time parents may notice it later. If you have concerns, contact your obstetrician rather than using a home Doppler.
Seek prompt medical assessment for vaginal bleeding, fluid leakage, severe or persistent abdominal pain, severe headache with vision changes, sudden swelling, fever, fainting or a concerning change in fetal movement once a usual pattern has been established.
Attend scheduled antenatal appointments, complete recommended screening, plan the anatomy scan, take prescribed supplements, eat a balanced diet, stay appropriately active, avoid alcohol and tobacco, and ask before starting medicines or supplements.
Medical note: This article is for general pregnancy education. Pregnancy care, screening, medicines, supplements, exercise restrictions and follow-up should be individualized by a qualified obstetrician or gynecologist. Do not use this guide to diagnose a pregnancy complication.
Need Antenatal Guidance?
If you are 17–20 weeks pregnant and have questions about fetal movement, the anatomy scan, symptoms, nutrition or exercise, discuss them with your obstetrician at My Health Hospitals.
Kukatpally: +91 9111674111 | Tarnaka: +91 9100001201
Kphb Branch
