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Quick Overview:

At 10 weeks pregnant, your baby — now the size of a fig and weighing approximately 4 grams — has completed its basic body plan, with a fully developed heart, separated fingers and toes, functional kidneys and stomach, and a brain producing around 250,000 neurons every minute. Mothers can expect a range of symptoms this week including heartburn, increased vaginal discharge, visible abdominal veins from heightened blood supply, and emotional mood swings driven by rising hormone levels. Brussels sprouts are highlighted as a particularly valuable pregnancy food at this stage, with a half cup providing 47 mcg of folate, a nutrient essential for new cell production and the prevention of neural tube defects affecting the brain, skull, and spine. An early pregnancy scan remains an option for those seeking reassurance as the first trimester draws to a close.

Key Takeaways
  • At pregnancy week 10, the baby weighs approximately 4 grams and is roughly the size of a fig or small plum.
  • By week 10, the baby's brain produces around a quarter of a million neurons every minute.
  • The baby's heart is completely developed by week 10, and organs including the kidneys and stomach are fully functional and capable of producing urine and digestive juices.
  • In male fetuses at week 10, the testes begin to produce testosterone even though external genitalia are not yet visible.
  • A half cup of Brussels sprouts contains 47 mcg of folate, a nutrient that supports new cell production and helps prevent neural tube defects.
  • Brussels sprouts are rich in Vitamins A, B6, C, and K, as well as folate, manganese, potassium, iron, magnesium, and fibre, making them a recommended food for pregnant women.
Originally published March 23, 2020 · Last updated July 15, 2026

Pregnancy Diary Week 10

Discover your pregnancy journey

Pregnancy Diary Week 10

You’re coming towards the end of your first trimester, which is a very exciting landmark to reach. Discover what’s happening during pregnancy week 10 for you and baby, plus learn about the nutritional benefits of Brussel Sprouts …the Christmas vegetable that most of us either love or hate!!

Discover

How your baby is growing

What you can expect  at this time

A beneficial food for your pregnancy nutrition

 

Pregnancy Diary Week 10: How Is Your Baby Growing?

Baby’s size is like a fig or a small plum.  Baby is approximately 4 grams in weight now. The baby has grown substantially since the time of conception but it doesn’t show on your body just yet. By this week, the baby’s body plan has almost been completed. The tail has completely disappeared and his fingers and toes are now separated. The heart is completely developed and the brain produces around a quarter of a million neurons every minute.

His tiny arms now have elbows that bend. Minute buds of baby teeth are now developing in the baby’s mouth. His kidneys and stomach are now fully functional that they are now capable of producing urine and digestive juices. Other sustaining organs such as intestines, brain and the liver also become functional. Though the external genital isn’t yet visible, the male’s testes are now beginning to produce testosterone.

What you can expect

Due to the increasing size of the baby, you can expect your weight to increase a little bit. By this time, you may be a bit sluggish and you get constipated most of the time. Pregnancy symptoms which have begun showing in the past weeks continue to manifest this week. These symptoms include heartburn, indigestion, flatulence, dizziness, increased vaginal discharge, food aversion, food cravings, nausea, fatigue, vomiting, headaches and occasional headaches.

By this week, you will notice the occurrence of a map of veins criss-crossing through your belly and abdomen. This is due to the increased blood supply and the veins help in supplying blood and nutrients to the baby.

In time, these veins will eventually fade. Lower abdominal pains should also be anticipated this week. The ligaments which support the belly are now stretching out and as your baby gets bigger, additional weight is put on the ligaments thereby causing a sharp or dull pain.

The high levels of hormones nowadays can cause you to suffer from a lot of physical and emotional distress. Some physical changes include slight swelling of the thyroid glands, softening of the gums and weight gain. Emotional distress includes feelings of being unattractive, future concerns and feelings of inadequacy. While some women are pretty excited about their pregnancy, some of us tend to suffer from frequent mood swings. Some of us cry over the simplest things and get upset very easily.

You may still wish to go for an early pregnancy scan at this stage.

Brussel Sprouts For Pregnancy Nutrition

 

Having a healthy diet is very important to pregnant women and to their baby. Brussels sprouts are one of the healthiest foods to eat for pregnant women. This vegetable is an excellent source of nutrients that are vital in optimizing the baby’s growth and development.

This excellent food choice is rich Vitamins A, B6, C and K as well as folate, manganese, potassium, iron magnesium and fibre. Brussels sprouts are also fortified with phytonutrients which play vital roles in enhancing the baby’s immune system. It also helps in preventing the occurrence of any complication during delivery.

A half cup of this vegetable is said to contain 47 mcg of folate which is very beneficial to the developing baby. This mineral actually helps in enhancing the production of new cells. Also, it helps in preventing the development of neural tube deformities, birth defects to the nervous system and any malformations in the brain, skull and spine. According to research, insufficient amount of folate in the body is useful in preventing low birth weight and premature birth.

Pregnant women need a lot of calcium during their pregnancy. Calcium plays a vital role in helping the nerves and the muscles to function efficiently. Also, calcium is important in regulating blood clotting thereby resulting to a reduced risk for excessive bleeding during delivery. Fortunately, Brussels sprouts are excellent source of this nutrient. Lack of calcium during pregnancy might put the mother at a greater risk for osteoporosis later on.

Brussels sprouts are also good source of iron and vitamin C. Iron is vital in the production of red blood cells. According to research, lack of iron increases the mother as well as the baby’s risk for anaemia. Meanwhile, Vitamin C facilitates in the absorption of iron.

This vegetable is an excellent source of phytonutrients which are beneficial in preventing DNA damage. Phytonutrients are essential in reducing women’s risk for preterm labour, preeclampsia, caesarean section and foetal distress.

Pregnancy Diary Week 10

Select a Week of the Pregnancy Diary to start viewing information specific to each week

 

Pregnancy Diary Week 1 Pregnancy Diary Week 2 Pregnancy Diary Week 3 Pregnancy Diary Week 4 Pregnancy Diary Week 5 Pregnancy Diary Week 6 Pregnancy Diary Week 7 Pregnancy Diary Week 8 Pregnancy Diary Week 9 Pregnancy Diary Week 10 Pregnancy Diary Week 11 Pregnancy Diary Week 12 Pregnancy Diary Week 13 Pregnancy Diary Week 14 Pregnancy Diary Week 15 Pregnancy Diary Week 16 Pregnancy Diary Week 17 Pregnancy Diary Week 18 Pregnancy Diary Week 19 Pregnancy Diary Week 20 Pregnancy Diary Week 21 Pregnancy Diary Week 22 Pregnancy Diary Week 23 Pregnancy Diary Week 24 Pregnancy Diary Week 25 Pregnancy Diary Week 26 Pregnancy Diary Week 27 Pregnancy Diary Week 28 Pregnancy Diary Week 29 Pregnancy Diary Week 30 Pregnancy Diary Week 31 Pregnancy Diary Week 32 Pregnancy Diary Week 33 Pregnancy Diary Week 34 Pregnancy Diary Week 35 Pregnancy Diary Week 36 Pregnancy Diary Week 37 Pregnancy Diary Week 38 Pregnancy Diary Week 39 Pregnancy Diary Week 40

DISCLAIMER

All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.

ANNOUNCEMENT

This website was formerly Merrion Fetal Health. The clinic has undergone a rebrand and is now known as Merrion Ultrasound.

How big is a baby at 10 weeks pregnant?

At week 10, the baby is approximately the size of a fig or a small plum and weighs approximately 4 grams. The baby's body plan has almost been completed by this stage.

What body systems are developed by pregnancy week 10?

By week 10, the baby's heart is completely developed, the kidneys and stomach are fully functional and capable of producing urine and digestive juices, and the brain is producing around a quarter of a million neurons every minute. The intestines, brain, and liver also become functional at this stage.

What physical symptoms can you expect at 10 weeks pregnant?

Common symptoms at 10 weeks include heartburn, indigestion, flatulence, dizziness, increased vaginal discharge, food cravings, nausea, fatigue, vomiting, and headaches. Visible veins criss-crossing the belly and lower abdominal pains from stretching ligaments are also expected at this stage.

Why do veins appear on the belly during pregnancy week 10?

The map of veins that appears across the belly and abdomen at week 10 is caused by increased blood supply, as the veins help deliver blood and nutrients to the baby. These veins will eventually fade over time.

Why are Brussels sprouts recommended during pregnancy?

Brussels sprouts are rich in Vitamins A, B6, C, and K, as well as folate, manganese, potassium, iron, magnesium, and fibre, making them one of the healthiest foods for pregnant women. They also contain phytonutrients that help enhance the baby's immune system and may help prevent complications during delivery.

How much folate do Brussels sprouts contain and why does it matter in pregnancy?

A half cup of Brussels sprouts contains 47 mcg of folate, a nutrient that supports the production of new cells and helps prevent neural tube deformities, birth defects to the nervous system, and malformations in the brain, skull, and spine.

What emotional changes can occur at 10 weeks pregnant?

High hormone levels at week 10 can cause emotional distress including feelings of being unattractive, future concerns, feelings of inadequacy, and frequent mood swings. Some women also experience crying easily or becoming upset over minor things during this period.

What physical changes occur in the mother's body at 10 weeks pregnant?

Physical changes at week 10 include slight swelling of the thyroid glands, softening of the gums, weight gain, and increased constipation. Lower abdominal pains are also common as the ligaments supporting the belly stretch to accommodate the growing baby.