Pregnancy week 29

Your baby’s development

Your baby's bones are hardening quickly this week and need calcium, which is drawn from what you eat. Your baby is about 38.6 cm long and weighs around 1153 g, roughly the size of a pumpkin. The head keeps growing to make room for the developing brain. Muscles and lungs continue to mature, and the ability to regulate body temperature is improving. Your baby can now open and close the eyes and responds to light and sound. As space in the womb gets tighter, movements may feel a little different: gentle rolls, plus elbow and knee nudges, can be more noticeable. Many babies begin to settle into a pattern of sleeping and waking, which may be reflected in when you feel movement. Every baby has an individual pattern. What matters most is getting to know what is usual for you and your baby. Your baby is also beginning to tell sounds apart, and may react to your familiar voice.

Changes in the mother

In the early weeks of the third trimester your body adapts to carrying the baby's weight. Back and lower back aches, tired legs and cramps are common now. As the growing womb moves closer to the diaphragm, you may feel a little short of breath or notice heartburn. Tiring more quickly on stairs or on a brisk walk is very usual. Some people notice mild swelling around the ankles that is more obvious in the evening. Falling asleep or finding a comfortable position can be harder; lying on your side with a pillow between your knees helps many people. It is natural to feel both excitement and worry. You can jot down questions about preparing for birth and talk them through with your healthcare provider at your next visit. Giving yourself enough time to rest is one of the most valuable things you can do in these weeks.

To do this week

• Start noticing your baby's daily movements and the times of day when they are more active.
• Plan short rest breaks during the day.
• Check the date of your third antenatal visit, usually between weeks 28 and 32.
• Write down questions as they come to mind.

Tip for the partner

You could suggest a gentle evening walk together or offer a light back rub.

Nutrition tip

Dairy products and leafy greens are good sources of calcium; ask your healthcare provider about your own needs.