Week 8: Transformation into a Fetus
The eighth week is the time when the embryo becomes a fetus. All major organs are formed.
Baby size: Raspberry (8-11 mm)
Baby development
Little movements and feature formation
Even though you don’t feel it at all, your baby is constantly moving, bending arms and legs. Its development impresses with detail.
What’s happening this week:
- Limbs: Fingers on hands and feet begin to separate, though there are still webbing between them. Elbows and knees are forming.
- Face: Eyelids are developing, currently covering the eyes; the upper lip and tip of the nose are forming.
- Organs: The intestine lengthens and may temporarily protrude into the umbilical cord — a normal stage of development.
- Taste receptors: The first taste buds start to form on the tongue.
Your fetus is becoming increasingly active, and this activity is key for proper muscle and joint development.
Changes for mom
Hormonal peak and its consequences
The hormone level is still very high, so fatigue and nausea are likely to remain your main companions. But there is good news: this won’t last forever!
What’s new in your sensations:
- Increased blood volume: Your heart works 50% harder to pump the larger blood volume needed to sustain the pregnancy. This is one reason for the intense fatigue.
- “Pregnant” nose: You may feel nasal congestion without other cold symptoms. It’s caused by swelling of the mucous membranes due to hormones.
- Sleep: Dreams can become extremely vivid and strange. This is also a common phenomenon.
Your body is doing titanic work. Don’t blame yourself for wanting to rest or eat something “unhealthy”. Right now, survival is what matters.
If you haven’t read them yet, our tips for coping with nausea may come in handy at this symptom peak.
Overview
Week 8: Goodbye, little tail! Hello, future baby!
In the eighth week a notable event occurs: your embryo officially loses its tiny tail and increasingly resembles a miniature human. Some experts start calling it a fetus from this moment.
It is now the size of a raspberry, and all its major organs, such as the heart, brain, lungs, and kidneys, are already in place and continue to develop actively.
This week will likely be associated with your first ultrasound. Hearing a heartbeat that now reaches 150-170 beats per minute is an incredibly moving experience that makes pregnancy feel much more real.
This is the week when you can first "see" your baby. It’s a powerful emotional moment that confirms a true miracle is happening inside you.
The first trimester is full of important events. To get the full picture, check out our overview material "First Trimester: What You Need to Know".
Tips for mom
First ultrasound and a smart approach to nutrition
This week is often associated with the first important examination. Prepare for it and don’t forget to take care of yourself.
What to pay attention to:
- Ultrasound preparation: Ask your doctor whether you need to drink water before the procedure (for transabdominal ultrasound) or, conversely, empty your bladder (for transvaginal).
- Choose comfortable clothing: Your favorite jeans may start to feel tight. Time to bring out leggings or pants with an elastic waistband.
- Eat what you can, but wisely. Try to include protein sources (yogurt, cheese) and complex carbs (whole‑grain bread) among your “safe” foods.
- Talk to your doctor about exercise. If you feel well, light activity such as swimming or walking can even reduce nausea.
To know what other examinations await you, check out the article "Tests and examinations during pregnancy".
Tips for partner
The importance of shared experience
The first ultrasound is an event not only for the mother. Your presence and participation will make this moment unforgettable for both of you.
Your role this week:
- Make sure to attend the ultrasound. It’s a chance to see your baby and realize your upcoming fatherhood. It makes the process real for dad as well.
- Be patient. She may be very tired and irritable. It’s physiology, not her character.
- Take on part of the communication. If relatives are overly inquisitive, offer to take the “hit” and handle the calls.
- Support her style changes. Compliment her when she wears something new and comfortable.
Psychological readiness of both partners is very important. Learn more in the article "Psychological readiness for pregnancy".
Checklist
Your action plan for week 8
The checklist will help keep focus on the essentials.
- ✅ Attend the first ultrasound examination.
- 🖼️ Ask for the first photo of your baby. It will be a priceless memory.
- 👖 Buy the first “maternity” pants or a waist expander.
- 🥦 Try adding green vegetables to your diet, if nausea allows (e.g., as a smoothie).
- ❤️ Share the news with close ones, if you’ve decided the time is right.
- 👩⚕️ Learn more about medical care by reading the article on prenatal care.