Pregnancy Week Chart, Complete Pregnancy Weeks and Months Chart | Moms Preg Ladder
Expert-Reviewed Pregnancy Guide

Pregnancy Week Chart

Track Your Pregnancy Journey Week by Week

Understand your pregnancy week by week with a detailed pregnancy weeks and months chart designed to help expecting mothers monitor baby growth, body changes, symptoms, and trimester milestones.

By Swapnil Kaushik, Certified Childbirth Educator Reviewed: May 2026 12 min read
40 Weeks of Joy
1st
Trimester
2nd
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3rd
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3
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9
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40
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Pregnancy Weeks and Months Chart

Pregnancy weeks and months chart is a helpful guide for expecting mothers to know the progress of the pregnancy from conception till delivery. Pregnancy is counted medically in weeks, so many moms find it helpful to correlate pregnancy weeks with calendar months.

Pregnancy Month Pregnancy Weeks Trimester
Month 1Week 1 to Week 4First Trimester
Month 2Week 5 to Week 8First Trimester
Month 3Week 9 to Week 13First Trimester
Month 4Week 14 to Week 17Second Trimester
Month 5Week 18 to Week 22Second Trimester
Month 6Week 23 to Week 27Second Trimester
Month 7Week 28 to Week 31Third Trimester
Month 8Week 32 to Week 35Third Trimester
Month 9Week 36 to Week 40Third Trimester

At Moms Preg Ladder we guide mothers through every stage of pregnancy with expert advice, antenatal support, pregnancy yoga, breastfeeding prep and childbirth education.

First Trimester Pregnancy Chart

Weeks 1 to 13

The first trimester is the beginning of your pregnancy journey. During this stage, your baby starts developing major organs, the brain, spinal cord, and heartbeat.

🤒 Common Symptoms

  • Morning sickness
  • Fatigue
  • Mood swings
  • Breast tenderness
  • Nausea
  • Food cravings
  • Frequent urination

👶 Baby Development Highlights

  • Heartbeat begins around Week 6
  • Tiny arms and legs begin forming
  • Brain development starts rapidly
  • Facial features start appearing
First trimester pregnancy timeline: Week 1–4 Implantation & Hormone Changes, Week 5–8 Heartbeat & Organ Formation, Week 9–13 Rapid Fetal Growth & Movement — Moms Preg Ladder

Second Trimester Pregnancy Chart

Weeks 14 to 27

The second trimester is often considered the most comfortable stage of pregnancy. Many mothers experience increased energy levels and reduced nausea.

🤰 Common Symptoms

  • Baby movements
  • Increased appetite
  • Back pain
  • Skin changes
  • Stretch marks
  • Mild swelling

👶 Baby Development Highlights

  • Baby can hear sounds
  • Fingerprints develop
  • Facial expressions form
  • Bones strengthen
  • Gender may become visible during ultrasound
Baby size comparison chart — second trimester: Week 16 Avocado (11.6 cm, 100 g), Week 20 Banana (16.1 cm, 300 g), Week 24 Corn (21.1 cm, 600 g), Week 27 Cauliflower (24.1 cm, 900 g) — Moms Preg Ladder

Third Trimester Pregnancy Chart

Weeks 28 to 40

The third trimester prepares both mother and baby for labor and delivery. During this phase, the baby gains weight rapidly and organs mature fully.

🤱 Common Symptoms

  • Shortness of breath
  • Pelvic pressure
  • Sleep difficulty
  • Braxton Hicks contractions
  • Frequent urination
  • Swollen feet

👶 Baby Development Highlights

  • Lungs mature
  • Brain develops rapidly
  • Baby gains body fat
  • Baby moves into birth position
Third trimester delivery preparation timeline — Your Journey to Meet Your Baby: Week 28–32 Growth & Brain Development, Week 33–36 Positioning for Birth, Week 37–40 Full-Term Pregnancy — Moms Preg Ladder

Detailed Pregnancy Week Chart

What happens during each pregnancy week? Here is a complete stage-by-stage breakdown of your entire pregnancy journey from Week 1 to Week 40.

Week 1 to Week 4

Your body begins preparing for pregnancy even before conception occurs. Hormonal changes start supporting implantation and embryo development.

Week 5 to Week 8

The baby's heartbeat begins developing, and early pregnancy symptoms become stronger. Many women confirm pregnancy during this phase.

Week 9 to Week 12

The baby develops facial features, tiny fingers, and important organs. The risk of miscarriage gradually decreases.

Week 13 to Week 16

Energy levels often improve. The baby continues growing rapidly, and body movements begin developing.

Week 17 to Week 20

Many mothers start feeling baby kicks during this stage. Ultrasounds may reveal the baby's gender.

Week 21 to Week 24

The baby develops sleeping patterns and responds to sounds. The lungs continue maturing.

Week 25 to Week 28

The third trimester approaches. Weight gain increases, and the baby's senses continue developing.

Week 29 to Week 32

The baby grows rapidly and practices breathing movements. Mothers may experience back discomfort and swelling.

Week 33 to Week 36

The baby settles into a head-down position in preparation for labor.

Week 37 to Week 40

Your pregnancy reaches full term. Labor signs may begin anytime during this period.

Complete Chart: Development of the Foetus Body Organs

Every baby develops at their own pace. This chart is a general guide showing when key fetal organs begin and complete their development.

Complete chart of fetal body organ development: Start and completion weeks for Spine/Backbone, Brain, Eye, Lungs, Heart, Digestion, Liver, Face, Nose, Ears, Arms, Urethra, and Reproductive Organ — Moms Preg Ladder

Why Understanding A Pregnancy Month Chart Is Important

A pregnancy month chart helps mothers understand all key aspects of their journey. Tracking pregnancy week by week also helps expecting parents feel emotionally prepared and connected to their baby's development journey.

👶

Baby development milestones

🔄

Trimester transitions

🤒

Pregnancy symptoms

🏥

Medical checkup timelines

🥗

Nutrition requirements

🧘

Exercise recommendations

🌸

Labor preparation stages

Expert Pregnancy Guidance From Moms Preg Ladder

Moms Preg Ladder is a professional assistance for pregnant women at any stage of pregnancy. All guidance is provided under the supervision of an expert to help mothers have a healthier and more confident pregnancy journey.

Antenatal Classes Online
Pregnancy Yoga Classes
Pregnancy Education
Breastfeeding Advice & Support
Help with Postpartum Recovery
Pregnancy Coaching for Nutrition
Emotional Wellness Assistance
Mrs. Swapnil Kaushik

Mrs. Swapnil Kaushik

Internationally Certified Childbirth Educator
Maternal & Child Nutritionist · Pregnancy Health Coach
Founder, Moms Preg Ladder

"Every pregnancy is a unique journey. Use this pregnancy week chart as a guide to understand your baby's development — and remember, consistent care, the right nutrition, and expert support make all the difference. At Moms Preg Ladder, we are here with you every step of the way."

Frequently Asked Questions

How many weeks are there in pregnancy? +
A full-term pregnancy usually lasts around 40 weeks from the first day of the last menstrual period.
How do pregnancy weeks match with months? +
Pregnancy months and weeks do not divide equally. A pregnancy weeks and months chart helps mothers understand trimester and month progression accurately.
Which trimester is most important? +
All trimesters are important because every stage supports different aspects of baby development and maternal health.
When should I join antenatal classes? +
Most experts recommend joining antenatal classes during the second trimester, usually between Week 20 and Week 30.
Why is a pregnancy week chart helpful? +
A pregnancy week chart helps mothers track fetal growth, body changes, medical milestones, and labor preparation stages.
Medical Disclaimer: This pregnancy week chart is for educational purposes only and should not replace professional medical advice.

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