π€± Pregnancy Calculator
Calculate your due date, conception date, and pregnancy milestones. Track pregnancy weeks, trimesters, and important dates with detailed pregnancy timeline and development information.
πΆ Due Date
March 15, 2025
Week 20 of 40 (50% complete)
π Pregnancy Timeline
ποΈ Important Dates
πΆ Baby Development
π Pregnancy Milestones
Week |
Milestone |
Baby Size |
Development |
4 |
𧬠Implantation |
Poppy seed |
Neural tube forms |
8 |
π Heartbeat |
Raspberry |
Heart starts beating |
12 |
π End of 1st trimester |
Lime |
All organs formed |
20 |
π Anatomy scan |
Banana |
Gender can be determined |
28 |
π 3rd trimester |
Eggplant |
Eyes can open |
40 |
πΆ Full term |
Watermelon |
Ready for birth |
π€± Understanding Pregnancy Calculations
Pregnancy calculations help track fetal development and plan for important milestones. Understanding how due dates are calculated and what to expect during each trimester is essential for prenatal care.
π
Pregnancy Dating Methods
Method |
Accuracy |
When Used |
Notes |
π
Last Menstrual Period (LMP) |
Β±1-2 weeks |
Most common method |
Assumes 28-day cycle |
π¬ First Trimester Ultrasound |
Β±3-5 days |
6-12 weeks |
Most accurate method |
π€± Conception Date |
Β±1 week |
When conception date known |
IVF or known ovulation |
π Second Trimester Ultrasound |
Β±1-2 weeks |
13-27 weeks |
Less accurate than early scan |
π Fundal Height |
Β±2-3 weeks |
20+ weeks |
Physical examination |
π Pregnancy Trimesters
Trimester |
Weeks |
Key Developments |
Common Symptoms |
π± First Trimester |
1-12 weeks |
Organ formation, neural tube |
Morning sickness, fatigue |
πΏ Second Trimester |
13-27 weeks |
Rapid growth, movement |
Energy returns, baby kicks |
π³ Third Trimester |
28-40 weeks |
Lung maturation, weight gain |
Discomfort, Braxton Hicks |
π¬ Prenatal Testing Schedule
Test |
Timing |
Purpose |
Type |
π©Έ First Prenatal Visit |
6-8 weeks |
Confirm pregnancy, health check |
Blood work, exam |
π Dating Ultrasound |
8-12 weeks |
Confirm due date, heartbeat |
Ultrasound |
𧬠NT Screening |
11-14 weeks |
Chromosomal abnormalities |
Ultrasound + blood |
π¬ Quad Screen |
15-20 weeks |
Neural tube defects |
Blood test |
πΆ Anatomy Scan |
18-22 weeks |
Organ development, gender |
Detailed ultrasound |
π¬ Glucose Test |
24-28 weeks |
Gestational diabetes |
Blood test |
π¦ GBS Test |
35-37 weeks |
Group B Strep |
Vaginal/rectal swab |
πΆ Fetal Development Milestones
Week |
Size |
Weight |
Major Development |
4 |
2mm |
<1g |
Heart begins to beat |
8 |
16mm |
1g |
All major organs present |
12 |
54mm |
14g |
Reflexes develop |
16 |
116mm |
100g |
Gender can be determined |
20 |
160mm |
300g |
Movements felt by mother |
24 |
210mm |
600g |
Viability outside womb |
28 |
250mm |
1000g |
Eyes can open |
32 |
280mm |
1700g |
Bones hardening |
36 |
320mm |
2600g |
Lungs nearly mature |
40 |
360mm |
3400g |
Full term, ready for birth |
β οΈ Pregnancy Warning Signs
Symptom |
When to Call Doctor |
Possible Concern |
Urgency |
π©Έ Bleeding |
Any trimester |
Miscarriage, placental issues |
Immediate |
π€ Severe headache |
Second/third trimester |
Preeclampsia |
Same day |
ποΈ Vision changes |
Any time |
Preeclampsia |
Same day |
π€’ Severe vomiting |
Can't keep fluids down |
Hyperemesis gravidarum |
24-48 hours |
π₯ Fever over 100.4Β°F |
Any trimester |
Infection |
Same day |
π§ Fluid leakage |
Before 37 weeks |
Premature rupture |
Immediate |
πΆ No fetal movement |
After 28 weeks |
Fetal distress |
Same day |
π Pregnancy Nutrition Guidelines
Nutrient |
Daily Requirement |
Food Sources |
Importance |
𧬠Folic Acid |
600 mcg |
Leafy greens, fortified cereals |
Neural tube development |
π©Έ Iron |
27 mg |
Red meat, beans, spinach |
Prevent anemia |
𦴠Calcium |
1000 mg |
Dairy, fortified foods |
Bone development |
π DHA |
200 mg |
Fish, walnuts, supplements |
Brain development |
π Vitamin D |
600 IU |
Fortified milk, sunlight |
Bone health |
π‘ Pregnancy Tips
- π
Track Your Dates: Keep accurate records of LMP and important appointments
- π Take Prenatal Vitamins: Start before conception if possible
- π₯ Regular Prenatal Care: Attend all scheduled appointments
- π Avoid Harmful Substances: No smoking, alcohol, or recreational drugs
- π Eat Healthy: Focus on nutrient-dense foods
- π§ Stay Hydrated: Drink plenty of water throughout the day
- π Exercise Safely: Moderate exercise with doctor approval
- π΄ Get Adequate Rest: Sleep is crucial for fetal development
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