Key Developments
Estimated Conception:
December 28, 2025
December 28, 2025
+ Pregnancy Test:
January 11, 2026
January 11, 2026
Estimated First Heart Beat:
January 21, 2026
January 21, 2026
Estimated Due Date:
September 20, 2026
September 20, 2026
Birthday Signs
Baby's star sign is Virgo
Birthstone: Sapphire
Birth Flower: Aster or Morning Glory
Birthstone Color: Deep, Blue
Birthstone: Sapphire
Birth Flower: Aster or Morning Glory
Birthstone Color: Deep, Blue
Trimester Dates
Trimester One:
Dec 14, 2025 - Mar 21, 2026
0 - 13 WeeksTrimester Two:
Mar 22, 2026 - Jun 27, 2026
14 - 27 WeeksTrimester Three:
Jun 28, 2026 - Sep 20, 2026
28 - 40 WeeksMonths Timeline
| 1 Month Pregnant | Jan 14, 2026 |
| 2 Months Pregnant | Feb 14, 2026 |
| 3 Months Pregnant | Mar 14, 2026 |
| 4 Months Pregnant | Apr 14, 2026 |
| 5 Months Pregnant | May 14, 2026 |
| 6 Months Pregnant | Jun 14, 2026 |
| 7 Months Pregnant | Jul 14, 2026 |
| 8 Months Pregnant | Aug 14, 2026 |
| 9 Months Pregnant | Sep 14, 2026 |
| Due Date: September 20, 2026 | |
Date |
How Often to Visit Doctor[1] |
| Jan 11 - Jun 28 | Once a month during this time |
| Jun 28 - Aug 23 | Twice per month during this time |
| Aug 23 - Sep 20 | Once per week during this time |
Prenatal Testing Dates[2]
Early Ultrasound Scan:
Feb 8, 2026 to Mar 15, 2026
7 to 13 weeks
7 to 13 weeks
First Trimester Screening or Nuchal Translucency Scan (Blood Test and Ultrasound):
Mar 1, 2026 to Mar 15, 2026
11 to 13 weeks
11 to 13 weeks
Quad Screen (Blood Test):
Mar 29, 2026 to May 3, 2026
15 to 20 weeks
15 to 20 weeks
Second Trimester Ultrasound or Anomaly Scan:
Apr 19, 2026 to May 10, 2026
18 to 21 weeks
18 to 21 weeks
Glucose Challenge Screening (Blood Test):
May 31, 2026 to Jun 28, 2026
24 to 28 weeks
24 to 28 weeks
Your Firsts
| First missed period | Jan 11 | 4 Weeks |
| Baby's heart beat heard | Mar 08 | 16 Weeks |
| Belly definitely showing | Apr 05 | 16-18 Weeks |
| Baby kicks felt, second or later babies | Apr 19 | 18-20 Weeks |
| Friends and family may feel baby move | Jul 19 | 31 Weeks |
Baby's Developments
| Conception is most likely on this date | Dec 28 | 2 Weeks |
| First heart beat | Jan 21 | 5 Weeks |
| Major organs have formed and face is slowly forming | Feb 22 | 10 Weeks |
| Miscarriage risk decreases | Mar 8 | 12 Weeks |
| Your baby can see light through their closed eyelids | Mar 29 | 15 Weeks |
| You may be able to feel your baby move now | Apr 5 | 16 Weeks |
| Your baby can now hear sounds | Apr 26 | 19 Weeks |
| Third trimester, baby is "practice breathing" | Jun 28 | 28 Weeks |
| Eyelashes, fingernails, and toenails have now formed | Jul 26 | 32 Weeks |
Things to Consider
| Start planning maternity leave and postpartum work schedule. Tell boss about pregnancy | Mar 8 | 12 Weeks |
| Popular time to tell friends and family | Mar 8 | 12 Weeks |
| Start pediatrician interviews | May 3 | 20 Weeks |
| Good time to look into birthing classes for first pregnancies | May 10 | 21 Weeks |
| If banking cord blood, find facility and order kit | May 17 | 22 Weeks |
| Decide whether you want a birthing coach or doula. Start interviewing | Jun 28 | 28 Weeks |
| Have your baby shower anytime from now | Jul 12 | 30 Weeks |
| Good time to take birthing classes | Jul 12 | 30 Weeks |
| Popular time to have your last day of work | Aug 23 | 36 Weeks |
| Have your pediatrician chosen ready for baby after birth | Aug 23 | 36 Weeks |
| Plan who you want to keep in the loop when you go into labor | Aug 23 | 36 Weeks |
| Learn the symptoms of labor | Aug 23 | 36 Weeks |
When is my Baby Premature, Full Term or Late Term?[2]
| Babies born now are considered Extremely Premature | Jun 7 | 25 Weeks |
| Babies born now are considered Moderately Premature | Jul 5 | 29 Weeks |
| Babies born now are considered Mildly Premature | Aug 2 | 33 Weeks |
| Babies born now are considered Early Term | Aug 30 | 37 Weeks |
| Babies born now are considered Full Term | Sep 13 | 39 Weeks |
| Babies born now are considered Late Term | Sep 27 | 41 Weeks |
| Babies born now are considered Post Term | Oct 4 | 42+ Weeks |
Most Probable Due Range
| S | M | T | W | T | F | S |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 30 Early Term | 31 Early Term | |||||
| S | M | T | W | T | F | S |
|---|---|---|---|---|---|---|
| 1 Late Term | 2 Late Term | 3 Late Term | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Imagine
First footsteps in September 20, 2027 (1 year)
Start kindergarten in September 20, 2031 (5 years)
Start high school in September 20, 2040 (14 years)
Start to drive in September 20, 2042 (16 years)
Finish high school in September 20, 2044 (18 years)
Graduate from college in 2049 (23 years)
Start kindergarten in September 20, 2031 (5 years)
Start high school in September 20, 2040 (14 years)
Start to drive in September 20, 2042 (16 years)
Finish high school in September 20, 2044 (18 years)
Graduate from college in 2049 (23 years)
Important Birthdays
First Birthday: September 20, 2027
5th Birthday: September 20, 2031
Sweet 16: September 20, 2042
21st Birthday: September 20, 2047
50th Birthday: September 20, 2076
5th Birthday: September 20, 2031
Sweet 16: September 20, 2042
21st Birthday: September 20, 2047
50th Birthday: September 20, 2076
40 Weeks of Pregnancy
0 Weeks Pregnant on Dec 14, 2025
1 Week Pregnant on Dec 21, 2025
2 Weeks Pregnant on Dec 28, 2025
3 Weeks Pregnant on Jan 04, 2026
4 Weeks Pregnant on Jan 11, 2026
5 Weeks Pregnant on Jan 18, 2026
6 Weeks Pregnant on Jan 25, 2026
7 Weeks Pregnant on Feb 01, 2026
8 Weeks Pregnant on Feb 08, 2026
9 Weeks Pregnant on Feb 15, 2026
10 Weeks Pregnant on Feb 22, 2026
11 Weeks Pregnant on Mar 01, 2026
12 Weeks Pregnant on Mar 08, 2026
13 Weeks Pregnant on Mar 15, 2026
14 Weeks Pregnant on Mar 22, 2026
15 Weeks Pregnant on Mar 29, 2026
16 Weeks Pregnant on Apr 05, 2026
17 Weeks Pregnant on Apr 12, 2026
18 Weeks Pregnant on Apr 19, 2026
19 Weeks Pregnant on Apr 26, 2026
20 Weeks Pregnant on May 03, 2026
21 Weeks Pregnant on May 10, 2026
22 Weeks Pregnant on May 17, 2026
23 Weeks Pregnant on May 24, 2026
24 Weeks Pregnant on May 31, 2026
25 Weeks Pregnant on Jun 07, 2026
26 Weeks Pregnant on Jun 14, 2026
27 Weeks Pregnant on Jun 21, 2026
28 Weeks Pregnant on Jun 28, 2026
29 Weeks Pregnant on Jul 05, 2026
30 Weeks Pregnant on Jul 12, 2026
31 Weeks Pregnant on Jul 19, 2026
32 Weeks Pregnant on Jul 26, 2026
33 Weeks Pregnant on Aug 02, 2026
34 Weeks Pregnant on Aug 09, 2026
35 Weeks Pregnant on Aug 16, 2026
36 Weeks Pregnant on Aug 23, 2026
37 Weeks Pregnant on Aug 30, 2026
38 Weeks Pregnant on Sep 06, 2026
39 Weeks Pregnant on Sep 13, 2026
40 Weeks Pregnant on Sep 20, 2026
What if My Due Date September 20, Has Changed?[3]
Your due date September 20th, 2026 could be changed if there is a significant difference between the due date based on ultrasound and the due date calculated from your LMP (September 20, 2026) date.
The American College of Obstetricians and Gynecologists, the American Institute of Ultrasound in Medicine, and the Society for Maternal-Fetal Medicine have produced guidelines to help doctors decide when to change due dates. See chart here.
References:
- Prenatal Care Fact Sheet. http://womenshealth.gov/publications/our-publications/fact-sheet/prenatal-care.html
- Prenatal care and tests. Office on Women's Health (OWH) GOV - https://www.womenshealth.gov/pregnancy/youre-pregnant-now-what/prenatal-care-and-tests
- Committee Opinion No. 579. 2013. Definition of term pregnancy. Obstet Gynec. 122 (2013): 1139-40. doi: 10.1097/01.AOG.0000437385.88715.4a
- Committee Opinion No. 611. Method for estimating due date. Obstet Gynec. 124 (2014): 863-6. doi: 10.1097/01.AOG.0000454932.15177.be