8 Weeks Pregnant: Baby Development, Symptoms and First Ultrasound

At 8 weeks pregnant, your baby is about the size of a raspberry and developing rapidly. If you are searching for 8 weeks pregnant baby size or 8 weeks pregnant symptoms, this is often the week everything starts to feel more real.

Tiny fingers are forming. Facial features are becoming clearer. The heartbeat is strong and steady.

For many women, this is also the time of the first ultrasound. Anticipation can feel intense. Physically, symptoms may still be strong. Emotionally, this week can bring vulnerability, excitement, and uncertainty all at once.

Let’s walk through what is happening.

At a Glance:
8 Weeks Pregnant
  • Baby size: About the size of a raspberry, around 14 to 16 mm long
  • Trimester: First trimester
  • Key hormonal shift: hCG remains high, progesterone and estrogen increasing
  • Common symptoms: Nausea, fatigue, breast tenderness, bloating, food aversions
  • Doctor visit: Many first ultrasounds happen between weeks 8 and 10
  • Emotional theme: Anticipation and vulnerability as pregnancy begins to feel more real.

At 8 weeks pregnant, your baby measures about 14 to 16 mm from crown to rump. Growth is rapid and highly organized.

Here is what is developing:

  • Fingers and toes are forming, though still slightly webbed
  • Eyelids are developing and beginning to cover the eyes
  • The upper lip and nose are becoming more defined
  • The heart continues beating at approximately 140 to 170 beats per minute
  • Bones are beginning to form
  • Major organs such as the liver and kidneys continue developing
  • The small tail like structure is disappearing

Although still medically considered an embryo, your baby now has recognizable human features. By next week, the term shifts from embryo to fetus.

What Is Happening in Your Body at 8 Weeks Pregnant

Week 8 can feel physically demanding. Many women say 8 weeks pregnant symptoms peak around this time.

You may notice:

  • Persistent nausea or morning sickness
  • Strong food aversions
  • Heightened sense of smell
  • Extreme fatigue
  • Constipation or bloating
  • Mild uterine cramping

Your uterus is expanding to accommodate your growing baby. Blood volume continues increasing. Your body is also supporting the placenta as it strengthens its role in nourishing your baby.

If you feel unusually exhausted, that is normal. Your body is operating at a high metabolic pace while building life.

Rest is productive right now.

Emotional and Nervous System Changes

Hormonal shifts at 8 weeks pregnant can influence mood and emotional sensitivity.

You may feel:

  • Anxious before your 8 week ultrasound
  • Deeply attached already
  • Afraid to get too attached
  • Irritable or tearful
  • Overwhelmed by how much is changing

If you are waiting to hear or see the 8 week heartbeat, it is common to feel heightened anxiety. Uncertainty activates your nervous system’s protective response.

Your body is in a state of adaptation. Emotional waves do not mean something is wrong. They are part of the adjustment.

Gentle regulation matters during this time.

3 Gentle Focus Areas This Week

1. Support Your Energy

Simplify where possible. Small meals, steady hydration, and early bedtimes can make a meaningful difference.

2. Protect Your Nervous System

Limit excessive online searching if it increases anxiety. Choose trusted sources and then step away.

3. Normalize Rest

Your energy is being redirected internally. Slowing down is not weakness. It is biology.

Weekly Calm Practice

Sit comfortably and place one hand on your chest.

Inhale slowly for 4 counts.
Exhale slowly for 6 counts.

Imagine a tiny steady heartbeat inside you. Strong. Rhythmic. Consistent.

Continue for two minutes, allowing your exhale to be longer than your inhale. Longer exhales signal safety to your nervous system.

Looking Ahead to 9 Weeks Pregnant

Next week, your baby officially becomes a fetus. Features will continue refining. Subtle movements begin, though you will not feel them yet.

Symptoms may remain steady or begin shifting over the coming weeks.

The first trimester is still a period of intense internal development.

This Week’s Guided Episode

Listen to this week’s episode of the Pregnancy Week by Week Podcast for a calming explanation of 8 weeks pregnant development and a gentle nervous system reset designed for this stage of pregnancy.

Coming soon

Gentle Emotional Support

Early pregnancy can feel invisible to the world but enormous to you.

MamaZen offers short guided sessions designed to help calm anxiety, support sleep, and regulate your nervous system during pregnancy.

Sometimes reassurance comes from information.
Sometimes it comes from feeling steadier inside your own body.

Frequently Asked Questions

8 Weeks Pregnant: Baby Development, Symptoms and First Ultrasound

Is it normal if I do not feel very pregnant at 8 weeks?
plus sign

Yes. Symptoms vary widely. Some women experience intense nausea, while others have mild changes.

Can you hear the heartbeat at 8 weeks?
plus sign

Often yes during an ultrasound, though timing depends on accurate dating and equipment.

Is cramping normal at 8 weeks pregnant?
plus sign

Mild cramping without heavy bleeding can be normal as the uterus grows. Contact your provider if pain is severe or accompanied by heavy bleeding.

Why are my emotions so strong at 8 weeks?
plus sign

Hormonal changes combined with uncertainty can amplify emotional responses. This is common during the first trimester.

At 8 weeks pregnant, your baby is becoming more defined each day.

Tiny fingers are forming. A steady heartbeat continues. Your body is adapting in remarkable ways.

You may feel anticipation. You may feel vulnerable. You may feel both.

Everything unfolding inside you is purposeful and intelligent.

Go gently this week.

Written by Irin Rubin

Founder of MamaZen

Disclaimer

This content is for informational purposes only and does not replace medical advice. Always consult your healthcare provider with questions about your pregnancy.