Third Trimester

The third trimester spans from week 27 to the end of the pregnancy (around week 40). During this time, your baby will gain a lot of weight and prepare for birth. You may find that symptoms like heartburn, backache, and fatigue become worse as your baby grows larger.

Week by Week Development

27
Week 27
Baby size: Cauliflower

The baby's brain develops rapidly, and the nervous system becomes more complex. The baby may hiccup, causing rhythmic movements.

Video available
28
Week 28
Baby size: Eggplant

The baby's brain develops rapidly, and the nervous system becomes more complex. The baby may hiccup, causing rhythmic movements.

Video available
29
Week 29
Baby size: Butternut squash

The baby gains weight rapidly. Its bones are fully formed but still soft. The baby can open and close its eyes and may respond to light.

Video available
30
Week 30
Baby size: Cabbage

The baby gains weight rapidly. Its bones are fully formed but still soft. The baby can open and close its eyes and may respond to light.

Video available
31
Week 31
Baby size: Coconut

The baby gains weight rapidly. Its bones are fully formed but still soft. The baby can open and close its eyes and may respond to light.

Video available
32
Week 32
Baby size: Pineapple

The baby gains weight rapidly. Its bones are fully formed but still soft. The baby can open and close its eyes and may respond to light.

Video available
33
Week 33
Baby size: Honeydew melon

The baby continues to gain weight. Its lungs are nearly mature, and it settles into a birth position, usually head down.

Video available
34
Week 34
Baby size: Cantaloupe

The baby continues to gain weight. Its lungs are nearly mature, and it settles into a birth position, usually head down.

Video available
35
Week 35
Baby size: Honeydew melon

The baby continues to gain weight. Its lungs are nearly mature, and it settles into a birth position, usually head down.

Video available
36
Week 36
Baby size: Romaine lettuce

The baby continues to gain weight. Its lungs are nearly mature, and it settles into a birth position, usually head down.

Video available
37
Week 37
Baby size: Winter melon

The baby is considered full term. Its organs are ready to function on their own, and it continues to gain weight until birth.

Video available
38
Week 38
Baby size: Watermelon

The baby is considered full term. Its organs are ready to function on their own, and it continues to gain weight until birth.

Video available
39
Week 39
Baby size: Pumpkin

The baby is considered full term. Its organs are ready to function on their own, and it continues to gain weight until birth.

Video available
40
Week 40
Baby size: Small pumpkin

The baby is considered full term. Its organs are ready to function on their own, and it continues to gain weight until birth.

Video available