First Trimester of Pregnancy
Ovulation usually happens about two weeks after your last period starts. When an egg meets sperm, conception occurs.
At 3 weeks after your last period, about one week post-fertilisation, your baby is a tiny cluster of dividing cells.
At 4 weeks, your baby is now an embryo with two layers, while the early placenta begins to develop.
Baby’s brain, spinal cord, and heart begin developing, while pregnancy hormones may trigger nausea and breast tenderness.
The heart starts beating, facial features begin forming, and morning sickness or food aversions may become noticeable.
Baby grows quickly as arms and legs develop, while your body continues adjusting to rising hormone levels.
Major organs are forming, facial features become clearer, and the embryo starts making small movements inside the womb.
Baby’s muscles develop, allowing movement, while the head remains large compared to the body at this stage.
Baby officially becomes a fetus, with vital organs formed and continuing to mature steadily inside the uterus.
Bones begin hardening, fingers and toes separate, and baby starts stretching and kicking, though movements remain unnoticed.
Baby’s organs continue developing, and the risk of miscarriage significantly decreases for most pregnancies.
At 13 weeks pregnant, you’re in the final week of the first trimester. Your baby now has distinct fingerprints and measures nearly 3 inches long.
Second Trimester of Pregnancy
At 14 weeks pregnant, your baby can now make facial expressions, and you may feel more energetic with reduced nausea.
At 15 weeks, your baby can move their joints and is developing taste buds. Nasal congestion is a common pregnancy side effect.
At 17 weeks, your baby’s skeleton is transitioning from soft cartilage to bone, while the umbilical cord becomes stronger and thicker.
At 18 weeks, your baby’s genitals are developed enough to be visible on an ultrasound, and increased appetite is common.
At 19 weeks, your baby’s scalp is beginning to grow hair. Aching sides may be due to round ligament pain.
At 20 weeks pregnant, you’ve reached the halfway point! Your baby’s taste buds are now developing and becoming functional.
At 21 weeks pregnant, those early flutters may soon become strong kicks. Fun fact: your baby is now developing eyebrows.
At 22 weeks, your baby may start hearing your heartbeat, while your growing belly often attracts plenty of curious hands.
At 24 weeks, your baby remains long and lean, though that will change soon. Your uterus is now about the size of a soccer ball.
At 25 weeks, your baby is beginning to gain baby fat and grow more hair, while you may notice your own hair looking fuller and shinier.
At 26 weeks, your baby is practicing breathing by inhaling and exhaling small amounts of amniotic fluid.
At 27 weeks pregnant, you may notice your baby hiccupping, and they are also beginning to open and close their eyes.
THIRD Trimester of Pregnancy
At 28 weeks pregnant, third trimester begins, baby starts dreaming, and strong kicks or stretches are commonly felt.
At 29 weeks, muscles and lungs mature further, baby gains weight rapidly, and movements may feel heavier inside the womb.
At 31 weeks, baby practices breathing motions, immune system develops, and weight gain continues steadily.
At 32 weeks, baby’s bones are fully formed but soft, allowing flexibility during birth later on.
At 33 weeks, baby gains fat and strength, immune system improves, and sleep patterns become more established.
At 34 weeks pregnant, lungs are nearly mature, baby’s skin smooths out, and most systems prepare for birth.
At 35 weeks pregnant, baby often moves into a head-down position, practicing movements needed for delivery.
At 36 weeks, baby is almost full-term, continues gaining weight, and body systems finalize development.
At 38 weeks, your baby’s organs are ready for life outside the womb, and movements may feel slower but stronger.
At 39 weeks, your baby continues gaining weight, building fat reserves, and your body prepares actively for labour.
At 40 weeks, full-term pregnancy reached, baby is ready to be born, and delivery may happen at any time.