Pregnancy is a miraculous journey filled with surprises and tiny milestones that build up to the moment you finally meet your baby. For parents-to-be in Jackson, Mississippi, understanding fetal development isn’t just educational—it can also be deeply emotional and bonding.
At Images of Love, we believe that watching your baby grow should be celebrated in every possible way. While we are not a medical facility and cannot offer medical advice, we provide 3D ultrasound experiences that let you witness the magic of fetal development firsthand.
Here are 10 fascinating facts about fetal development that might just amaze you—and help you connect more deeply with your little one.
1. Your Baby’s Heart Begins Beating at Just 5–6 Weeks
By the time most people realize they’re pregnant, the baby’s heart may already be beating. It’s one of the earliest signs of fetal development, and it’s incredibly emotional to witness. If you’re tracking fetal development by week, this milestone usually happens around week six.
Imagine hearing that tiny thump-thump sound while watching your baby on screen during a 3D ultrasound of fetus —it’s a moment many families never forget.
2. Babies Start Moving Before You Can Feel Them
Even though you might not feel anything until weeks 16 to 20, babies start to wiggle and move around much earlier—around week 8 or 9. These early movements are part of normal fetal development and help your baby’s muscles and nerves grow stronger.
Thanks to 3D ultrasound fetal development, you might even catch these first tiny stretches and somersaults in real time.
3. Fetal Development by Week Tells a Detailed Story
If you’re someone who loves the fine details, following fetal development by week can be a real treat. Each week brings small, exciting changes:
- Week 9: Eyelids form and the baby’s tail disappears
- Week 12: Fingernails start to grow
- Week 20: The baby can hear your voice
Jackson, MS parents love learning about these weekly developments—and seeing them brought to life in keepsake ultrasound images.
4. By Month Three, Your Baby Looks Like… a Baby!
When you look at fetal development by month, the third month is a major turning point. Around week 12, your baby has fingers, toes, ears, and even tiny teeth beneath the gums. The fetus is developing human features, but is still very small.
Many expecting families choose this time to schedule a 3D ultrasound of fetus to see those early facial features take shape. It’s a wonderful moment to share with loved ones or add to your memory book.
5. Babies Respond to Sound Starts by 18 Weeks
As your baby continues to grow, they start responding to the outside world. Around 18 to 20 weeks, your baby may begin to hear sounds—like your voice, music, or even your heartbeat.
This part of fetal development helps create a sense of comfort and familiarity. Talk, sing, or hum—your baby is listening!
6. Smiling, Yawning, and Sucking Thumbs Happen in the Womb
Thanks to 3D ultrasound fetal development sessions, parents can now witness amazing expressions and behaviors even before birth. It’s not uncommon to see your baby yawn, suck their thumb, or even smile while floating in the womb.
These magical glimpses go beyond clinical scans—they offer emotional reassurance and bonding moments you’ll cherish forever.
Note: While these behaviors can be observed via ultrasound, it’s crucial to understand that they are reflexes and developmental behaviors, not necessarily indicators of conscious emotions or intentions.
7. Fetal Development by Month Offers a Big Picture View
While fetal development by week gives detailed insights, tracking it by month helps you see how quickly your baby is maturing:
- Month 5: The baby can start kicking and moving with purpose
- Month 6: Eyelids open and the baby may react to light
- Month 8–9: The baby gains weight, and brain development peaks
Understanding fetal development by month is a great way for Jackson, Mississippi families to follow their pregnancy journey in bigger stages—and plan their ultrasound keepsake sessions accordingly.
8. Your Baby Has Fingerprints by Week 23
One of the coolest pieces of trivia? Your baby’s fingerprints form by week 23. These tiny ridges are completely unique and are already set before birth.
While you can’t see fingerprints in your ultrasound, this milestone is still a meaningful reminder of how distinct and special your baby already is.

9. Babies Dream in the Womb
Yes, really! Around 28–30 weeks into pregnancy, babies begin to experience REM (rapid eye movement) sleep—the phase linked to dreaming.
Although we can’t know exactly what babies dream about, this part of fetal development shows how complex and active their brains are becoming. Some families have even spotted sleepy faces and dream-like smiles during their 3D ultrasound of fetus sessions.
10. You Can Start Bonding Long Before Birth
Bonding doesn’t have to wait until delivery day. Through music, talking, and keepsake ultrasounds, families can begin forming emotional ties early on. Seeing your baby in the womb—especially through a 3D ultrasound fetal development scan—can spark a level of joy and connection that’s hard to describe.
At Images of Love, we’ve seen families laugh, cry, and simply stare in awe as they witness their baby’s journey from bump to bundle.
Frequently Asked Questions About Fetal Development
1. What are the states of fetal development?
Fetal development occurs in three key stages during pregnancy:
- First Trimester (Weeks 1–12): This is when the foundations of all major organs and systems are formed. The heartbeat begins, limbs start to bud, and facial features develop.
- Second Trimester (Weeks 13–26): Growth accelerates, and the baby starts to move, respond to sound, and develop more defined features. Gender can often be seen during this stage.
- Third Trimester (Weeks 27–40): The baby gains weight, the brain and lungs mature, and the body prepares for life outside the womb.
Understanding these stages helps families follow the incredible process of fetal development by week or fetal development by month.
2. What weeks are most important for fetal development?
All weeks are important, but some carry more critical developmental milestones:
- Weeks 3–8: Major organs and body structures form during this period, making it especially vital.
- Week 12: The fetus becomes more active, and risks of miscarriage drop significantly.
- Weeks 24–28: The baby’s lungs and brain undergo rapid development.
- Weeks 32–36: Final touches, like fat accumulation and immune support, are added before birth.
These periods are often popular times for parents to schedule a 3D ultrasound fetal development session to see how far their baby has come.
3. What makes a 3D ultrasound of fetus different from a regular scan?
A 3D ultrasound of fetus captures realistic, detailed images of your baby. Unlike 2D scans, which are flat and grayscale, 3D images show depth, texture, and facial expressions—making them perfect for keepsakes.
4. How soon can pregnancy be detected by ultrasound?
A pregnancy can typically be confirmed via ultrasound around 5 to 6 weeks after your last menstrual period. At this stage, the gestational sac is usually visible. By 6 to 7 weeks, you may be able to see a fetal heartbeat.
While medical ultrasounds confirm viability, a keepsake ultrasound—like those offered by Images of Love—is best done later, once the baby’s features begin to form for 3D ultrasound fetal development imaging.
5. Can too many ultrasounds harm the baby?
Ultrasound technology is considered safe when used appropriately. It uses sound waves, not radiation, and there’s no evidence to suggest that limited, responsible use causes harm to the baby.
At Images of Love, we prioritize your comfort and the emotional experience while staying within safety guidelines. Our sessions are non-diagnostic and focused on creating beautiful keepsakes and moments of connection—not medical assessments.
Final Thoughts: Celebrating Fetal Development with Images of Love
Pregnancy is more than a biological process—it’s an emotional and unforgettable chapter in your life. From tiny heartbeats to dreamy smiles, fetal development is full of little miracles that deserve to be seen, felt, and remembered.
For families in Jackson, Mississippi looking for a way to connect with their baby beyond medical appointments, Images of Love offers a heartfelt and meaningful experience. Our 3D ultrasound sessions are designed to help you witness the magic of fetal development, one beautiful moment at a time.
Book Your 3D Ultrasound Experience Today
Ready to see your baby’s face, fingers, and expressions before birth? Celebrate your pregnancy with Images of Love. While we don’t provide medical services, we specialize in emotional bonding and keepsake imaging. Whether you’re tracking fetal development by week or watching milestones unfold month by month, we’re here to make your journey unforgettable.
Serving families from Jackson, Mississippi and beyond—reach out today and schedule your 3D ultrasound session.
Visit us at Images of Love and let your story begin.
Disclaimer: This blog is for informational purposes only and is not medical advice. Images of Love provides keepsake 3D ultrasounds, not medical diagnoses. Consult your doctor for any health concerns.