Key Developments
Estimated Conception:
August 28, 2025
August 28, 2025
+ Pregnancy Test:
September 11, 2025
September 11, 2025
Estimated First Heart Beat:
September 21, 2025
September 21, 2025
Estimated Due Date:
May 21, 2026
May 21, 2026
Birthday Signs
Baby's star sign is Gemini
Birthstone: Emerald
Birth Flower: Hawthorn or Lily
Birthstone Color: Green
Birthstone: Emerald
Birth Flower: Hawthorn or Lily
Birthstone Color: Green
Trimester Dates
Trimester One:
Aug 14, 2025 - Nov 19, 2025
0 - 13 WeeksTrimester Two:
Nov 20, 2025 - Feb 25, 2026
14 - 27 WeeksTrimester Three:
Feb 26, 2026 - May 21, 2026
28 - 40 WeeksMonths Timeline
| 1 Month Pregnant | Sep 14, 2025 |
| 2 Months Pregnant | Oct 14, 2025 |
| 3 Months Pregnant | Nov 14, 2025 |
| 4 Months Pregnant | Dec 14, 2025 |
| 5 Months Pregnant | Jan 14, 2026 |
| 6 Months Pregnant | Feb 14, 2026 |
| 7 Months Pregnant | Mar 14, 2026 |
| 8 Months Pregnant | Apr 14, 2026 |
| 9 Months Pregnant | May 14, 2026 |
| Due Date: May 21, 2026 | |
Date |
How Often to Visit Doctor[1] |
| Sep 11 - Feb 26 | Once a month during this time |
| Feb 26 - Apr 23 | Twice per month during this time |
| Apr 23 - May 21 | Once per week during this time |
Prenatal Testing Dates[2]
Early Ultrasound Scan:
Oct 9, 2025 to Nov 13, 2025
7 to 13 weeks
7 to 13 weeks
First Trimester Screening or Nuchal Translucency Scan (Blood Test and Ultrasound):
Oct 30, 2025 to Nov 13, 2025
11 to 13 weeks
11 to 13 weeks
Quad Screen (Blood Test):
Nov 27, 2025 to Jan 1, 2026
15 to 20 weeks
15 to 20 weeks
Second Trimester Ultrasound or Anomaly Scan:
Dec 18, 2025 to Jan 8, 2026
18 to 21 weeks
18 to 21 weeks
Glucose Challenge Screening (Blood Test):
Jan 29, 2026 to Feb 26, 2026
24 to 28 weeks
24 to 28 weeks
Your Firsts
| First missed period | Sep 11 | 4 Weeks |
| Baby's heart beat heard | Nov 06 | 16 Weeks |
| Belly definitely showing | Dec 04 | 16-18 Weeks |
| Baby kicks felt, second or later babies | Dec 18 | 18-20 Weeks |
| Friends and family may feel baby move | Mar 19 | 31 Weeks |
Baby's Developments
| Conception is most likely on this date | Aug 28 | 2 Weeks |
| First heart beat | Sep 21 | 5 Weeks |
| Major organs have formed and face is slowly forming | Oct 23 | 10 Weeks |
| Miscarriage risk decreases | Nov 6 | 12 Weeks |
| Your baby can see light through their closed eyelids | Nov 27 | 15 Weeks |
| You may be able to feel your baby move now | Dec 4 | 16 Weeks |
| Your baby can now hear sounds | Dec 25 | 19 Weeks |
| Third trimester, baby is "practice breathing" | Feb 26 | 28 Weeks |
| Eyelashes, fingernails, and toenails have now formed | Mar 26 | 32 Weeks |
Things to Consider
| Start planning maternity leave and postpartum work schedule. Tell boss about pregnancy | Nov 6 | 12 Weeks |
| Popular time to tell friends and family | Nov 6 | 12 Weeks |
| Start pediatrician interviews | Jan 1 | 20 Weeks |
| Good time to look into birthing classes for first pregnancies | Jan 8 | 21 Weeks |
| If banking cord blood, find facility and order kit | Jan 15 | 22 Weeks |
| Decide whether you want a birthing coach or doula. Start interviewing | Feb 26 | 28 Weeks |
| Have your baby shower anytime from now | Mar 12 | 30 Weeks |
| Good time to take birthing classes | Mar 12 | 30 Weeks |
| Popular time to have your last day of work | Apr 23 | 36 Weeks |
| Have your pediatrician chosen ready for baby after birth | Apr 23 | 36 Weeks |
| Plan who you want to keep in the loop when you go into labor | Apr 23 | 36 Weeks |
| Learn the symptoms of labor | Apr 23 | 36 Weeks |
When is my Baby Premature, Full Term or Late Term?[2]
| Babies born now are considered Extremely Premature | Feb 5 | 25 Weeks |
| Babies born now are considered Moderately Premature | Mar 5 | 29 Weeks |
| Babies born now are considered Mildly Premature | Apr 2 | 33 Weeks |
| Babies born now are considered Early Term | Apr 30 | 37 Weeks |
| Babies born now are considered Full Term | May 14 | 39 Weeks |
| Babies born now are considered Late Term | May 28 | 41 Weeks |
| Babies born now are considered Post Term | Jun 4 | 42+ Weeks |
Most Probable Due Range
| S | M | T | W | T | F | S |
|---|---|---|---|---|---|---|
| 1 Early Term | 2 Early Term | |||||
| 3 Early Term | 4 Early Term | 5 Early Term | 6 Early Term | 7 Early Term | 8 Early Term | 9 Early Term |
| 10 Early Term | 11 Early Term | 12 Early Term | 13 Early Term | 14 Full Term | 15 Full Term | 16 Full Term |
| 17 Full Term | 18 Full Term | 19 Full Term | 20 Full Term | 21 Full Term | 22 Full Term | 23 Full Term |
| 24 Full Term | 25 Full Term | 26 Full Term | 27 Full Term | 28 Late Term | 29 Late Term | 30 Late Term |
| 31 Late 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 | ||||
Imagine
First footsteps in May 21, 2027 (1 year)
Start kindergarten in May 21, 2031 (5 years)
Start high school in May 21, 2040 (14 years)
Start to drive in May 21, 2042 (16 years)
Finish high school in May 21, 2044 (18 years)
Graduate from college in 2049 (23 years)
Start kindergarten in May 21, 2031 (5 years)
Start high school in May 21, 2040 (14 years)
Start to drive in May 21, 2042 (16 years)
Finish high school in May 21, 2044 (18 years)
Graduate from college in 2049 (23 years)
Important Birthdays
First Birthday: May 21, 2027
5th Birthday: May 21, 2031
Sweet 16: May 21, 2042
21st Birthday: May 21, 2047
50th Birthday: May 21, 2076
5th Birthday: May 21, 2031
Sweet 16: May 21, 2042
21st Birthday: May 21, 2047
50th Birthday: May 21, 2076
40 Weeks of Pregnancy
0 Weeks Pregnant on Aug 14, 2025
1 Week Pregnant on Aug 21, 2025
2 Weeks Pregnant on Aug 28, 2025
3 Weeks Pregnant on Sep 04, 2025
4 Weeks Pregnant on Sep 11, 2025
5 Weeks Pregnant on Sep 18, 2025
6 Weeks Pregnant on Sep 25, 2025
7 Weeks Pregnant on Oct 02, 2025
8 Weeks Pregnant on Oct 09, 2025
9 Weeks Pregnant on Oct 16, 2025
10 Weeks Pregnant on Oct 23, 2025
11 Weeks Pregnant on Oct 30, 2025
12 Weeks Pregnant on Nov 06, 2025
13 Weeks Pregnant on Nov 13, 2025
14 Weeks Pregnant on Nov 20, 2025
15 Weeks Pregnant on Nov 27, 2025
16 Weeks Pregnant on Dec 04, 2025
17 Weeks Pregnant on Dec 11, 2025
18 Weeks Pregnant on Dec 18, 2025
19 Weeks Pregnant on Dec 25, 2025
20 Weeks Pregnant on Jan 01, 2026
21 Weeks Pregnant on Jan 08, 2026
22 Weeks Pregnant on Jan 15, 2026
23 Weeks Pregnant on Jan 22, 2026
24 Weeks Pregnant on Jan 29, 2026
25 Weeks Pregnant on Feb 05, 2026
26 Weeks Pregnant on Feb 12, 2026
27 Weeks Pregnant on Feb 19, 2026
28 Weeks Pregnant on Feb 26, 2026
29 Weeks Pregnant on Mar 05, 2026
30 Weeks Pregnant on Mar 12, 2026
31 Weeks Pregnant on Mar 19, 2026
32 Weeks Pregnant on Mar 26, 2026
33 Weeks Pregnant on Apr 02, 2026
34 Weeks Pregnant on Apr 09, 2026
35 Weeks Pregnant on Apr 16, 2026
36 Weeks Pregnant on Apr 23, 2026
37 Weeks Pregnant on Apr 30, 2026
38 Weeks Pregnant on May 07, 2026
39 Weeks Pregnant on May 14, 2026
40 Weeks Pregnant on May 21, 2026
What if My Due Date May 21, Has Changed?[3]
Your due date May 21st, 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 (May 21, 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