10 Weeks Pregnant: Baby Development and Symptoms

Your Baby at 10 Weeks

At 10 weeks, your baby is growing rapidly and is now about the size of a strawberry, measuring approximately 1.2 inches (3 cm) in length and weighing around 0.14 ounces (4 grams). This stage marks an important transition as your little one moves from being an embryo to a fully developed fetus. Though still small, your baby’s body is becoming more proportional, with the head making up about half of the total size.

This week, major developments are underway. The webbing between tiny fingers and toes has disappeared, and nails are beginning to grow. Bones are starting to harden, while arms and legs become more mobile. The baby’s facial features, including the nose and lips, are more defined, and tiny tooth buds are forming under the gums. The heart is beating at a steady rhythm, and the brain is growing at a rapid pace, establishing more complex neural connections.

Key Developmental Changes

One of the most exciting changes at 10 weeks is the advancement of vital organ functions. The liver is now producing red blood cells, the kidneys are forming urine, and the intestines are starting to settle into their proper place within the abdomen. Although external genitalia are beginning to develop, it’s still too early to determine the baby’s sex on an ultrasound.

Another fascinating milestone is the early development of reflexes. Though you won’t be able to feel movements just yet, your baby may already be making tiny spontaneous motions as muscles strengthen and connections between the brain and limbs begin to form.

How Your Body is Changing

By week 10, you might notice more physical changes in your body. Your uterus is expanding and is now about the size of a grapefruit, though it is still sitting low in the pelvis. Some women may start to notice a slight rounding of the belly, but others may not see visible changes just yet—both are completely normal!

Hormonal shifts can continue to bring a range of pregnancy symptoms. Breast tenderness, morning sickness, and increased fatigue are still common as your body adjusts. Many women also experience an increased blood volume, which may cause noticeable veins on the skin and contribute to lightheadedness or mild headaches.

Pregnancy Symptoms at 10 Weeks

• Morning Sickness: Some women find that nausea starts to ease by this time, but for others, it may persist a little longer. Eating small, protein-rich meals and staying hydrated can help.
• Fatigue: Your body is working hard to support the pregnancy, so prioritizing rest is essential.
• Increased Vaginal Discharge: Higher estrogen levels can lead to more discharge, which helps prevent infections by maintaining a healthy balance of bacteria.
• Mood Swings: Hormonal fluctuations might leave you feeling emotionally unpredictable. This is completely normal—talking to someone you trust can help.
• Bloating and Gas: Progesterone relaxes muscles in your digestive tract, slowing digestion and sometimes causing bloating.

What You Can Do This Week

• Stay Active: Gentle prenatal exercises, like walking or stretching, can boost your mood and help with circulation.
• Hydrate and Eat Well: Drinking plenty of water and focusing on nutrient-rich foods will support both you and your baby.
• Plan Your First Ultrasound: Many women have their first ultrasound between 10 and 12 weeks, which can be an exciting milestone.
• Start Thinking About Maternity Clothes: If your current wardrobe is feeling tight, now may be the time to consider more comfortable options.

Looking Ahead

As you approach the second trimester, some of the more challenging symptoms of early pregnancy—like nausea and fatigue—may begin to fade. Your baby is continuing to grow at an astonishing rate, and soon, you may even catch a glimpse of tiny movements on an ultrasound. Take this time to care for yourself, stay informed, and enjoy the incredible changes happening in your body.