Fetal Development

Fast Facts

A human person’s life begins at fertilization when the father’s sperm penetrates the mother’s egg.

From the time of fertilization, a baby’s unique DNA and genetic makeup are complete from sex to hair color to height as an adult.

A baby’s heart begins to beat just three weeks after fertilization.

Brain waves can be detected at six weeks after fertilization.

At two months after fertilization, all of the baby’s organ systems are complete. The baby just needs to grow for the remainder of time in the womb.

Timeline of Fetal Development

Ever been curious about how your baby will develop? Mouse over the newborn on the right, or click below to learn more.

Thirty-five weeks after conception her muscles and bones were fully developed.

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Just six weeks after conception, she had measurable brain waves.

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At nineteen weeks her ears were fully developed.

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Only three weeks after conception, her heart began to beat.

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Twenty-three weeks after conception she had fingernails.

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She could make a fist with her tiny hand twelve weeks after conception.

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By the end of the first trimester, arms, legs, fingers, and toes were all fully recognizable.

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Footprints and fingerprints were present twenty-five weeks after conception.

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Ultrasound

3D ultrasound is a medical ultrasound technique used during pregnancy, providing three dimensional images of the unborn baby. Often these images are captured rapidly and animated to produce a 4D ultrasound. Below are 4D ultrasound videos from various stages of pregnancy: At 11-weeks; 22-weeks ; a 24-week and a 30-weeks (a yawning baby boy).

Free Ultrasounds

Where To Go in Wisconsin

Since the passage into law of Wisconsin Act 37, also known as Sonya’s Law, pregnant women in Wisconsin have the opportunity to see their child through ultrasound before making a choice about how to proceed with the pregnancy.

Here, listed by county, are the pro-life centers in Wisconsin offering free ultrasounds.

Pregnancy Help Center of Rice Lake
234 North Main Street
Rice Lake WI 54868
(715) 736-4357 (HELP)
Program Hours: Monday 9 am – 4 pm; Tuesday 9 am – 2 pm; Thursday 9 am – 4 pm &
5:30 – 7:30 pm
Area Served: Rice Lake area

Care Net Pregnancy Center of Dane County
1350 MacArthur Road
Madison WI 53714
(608) 259-1606 Client Line; (608) 259-1606 Business Line
Program Hours: Monday 9 am – 5 pm; Tuesday 9 am – 7 pm; Wednesday 9 am – 6 pm;
Thursday 9 am – 5 pm; Friday 9 am – 3 pm
Area Served: Madison and Dane County and surrounding communities and counties;
services are not limited based on the client’s residence

Care Net Family Resource Center
6105 22nd Avenue
Kenosha WI 53143
(262) 658-2555
Program Hours:
Area Served: Kenosha County

Hope Pregnancy Resource Center
210 McClellan Street, Suite 310
Wausau WI 54403
(715) 843-4673 Appointment Line/Main Phone Wausau
(715) 350-4333 Appointment Line Antigo
Program Hours: Wausau: Monday – Friday 9 am – 4 pm Memorial Day – Labor Day
and 9 am – 5 pm the rest of the year
Antigo: Tuesday 9 am – 5 pm and Thursday 9 am – 4 pm
Area Served: Marathon, Lincoln, Shawano, Langlade Counties

Care Net Pregnancy Center of Milwaukee
2917 N. Oakland Avenue
Milwaukee WI 53211
(414) 962-2212 Appointments
Program Hours: Monday – Friday 10 am – 4 pm
Area Served: Milwaukee area

Eyewitness for Life, Ltd.
9008 W Burleigh Street
Milwaukee WI 53222
(414) 462-5483
Program Hours: By appointment
Area Served: Wisconsin (no restrictions)

Women’s Care Center
1441 N. Farwell Ave.
Milwaukee, WI 53202
(877) 908-2341
(414) 223-2610

Women’s Care Center
634 W. Historic Mitchell St.
Milwaukee, WI 53204
(877) 908-2341
(414) 645-4050

WomanKind Medical Clinic
526 West Wisconsin Avenue
Appleton WI 54911
(920) 731-4354
Program Hours: Monday 9 am – 7 pm; Tuesday, Wednesday, Thursday 9 am – 5 pm;
Friday 9 am – 1 pm
Area Served: Fox Valley area

Care Net Pregnancy Resource Center of NW Wisconsin
1108 Port Arthur Road
Ladysmith WI 54848
(715) 532-7600 Appointments or (800) 712 HELP Toll Free
Program Hours: 1st
& 3rd Thursdays, by appointment
Area Served: Rusk, Price Counties; edges of Barron, Taylor, Sawyer, and Chippewa
Counties (no tight geographic restrictions)

Life’s Connection
307 S. Rochester
Mukwonago, WI 53149
Business Hours: MWTHF 9:30a-3:30p, Tues 12:00-7pm or by appt , after hours hotline can be reached at 262-844-7658
Services Provided: Free Pregnancy Tests, We do Free Ultrasound per Sonya’s Law and offer reduced rates on 3D & 4D Ultrasound, Abortion Information, Options Counseling, Adoption specialist, Pregnancy support, Material Aid, STD/STI info and testing, Medical and other referrals, Miscarriage support, Child and Infant loss,
Post abortion care, Parenting and pregnancy classes.

Bella Medical Clinic
1484 West South Park Avenue
Oshkosh WI 54902
(920) 231-6006
Program Hours: Monday, Tuesday, Wednesday 9 am – 4 pm; Thursday 9 am – 6 pm
Area Served: No restrictions, but typically Oshkosh, Omro, Berlin, Ripen, Fond du Lac,
Wautoma, all Fox Cities

Baby Debut – Appleton
811 N. Lynndale Drive 
Appleton, WI 54914

Baby Debut – Madison
East Towne Office Center
1320 Mendota Street, Ste. 103
Madison, WI 53704

920-731-5002
Fax: 920-731-5003
1-888-731-BABY

Email for both Baby Debut centers:  info@BabysDebut3D4DUltrasound.com

Life’s Connection – Women’s Care Center
307 S. Rochester, Mukwonago, WI 53149
Business Hours: MWTHF 9:30a-3:30p, Tues 12:00-7pm or by appt , after hours hotline can be reached at 262-844-7658 – Services Provided: Free Pregnancy Tests, We do Free Ultrasound per Sonya’s Law and offer reduced rates on 3D & 4D Ultrasound, Abortion Information, Options Counseling, Adoption specialist, Pregnancy support,
Material Aid, STD/STI info and testing, Medical and other referrals, Miscarriage support, Child and Infant loss, Post abortion care, Parenting and pregnancy classes.

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