The first day of your last menstrual period
Naegele's rule adjusted for cycle length
Gestational age confirmed by radiologist/obstetrician
💡 Early scan (7–13 weeks, CRL measurement) is the most accurate dating method. If the ultrasound date differs from LMP by >7 days, obstetricians typically use the ultrasound date.
Days from fertilisation to transfer
💡 IVF EDD = Transfer Date + (266 − embryo age) days. Day 5 blastocysts add 261 days; Day 3 add 263 days.
Date of unprotected intercourse / ovulation
💡 EDD = Conception Date + 266 days (38 weeks from conception = 40 weeks from LMP).
📅 Your Antenatal Timeline
🔬 Indian Antenatal Scan Schedule
| Week | Scan / Test | Purpose |
|---|---|---|
| 6–8 | Early viability scan | Confirm intrauterine pregnancy, heartbeat, rule out ectopic. Not always routine if asymptomatic |
| 8–10 | Dating scan | Confirm gestational age by CRL (crown-rump length). Correct EDD if needed |
| 11–13+6 | NT scan + Dual Marker Recommended | Nuchal translucency for Down syndrome risk. Combined with PAPP-A and β-hCG blood test |
| 18–20 | Anomaly scan (Level II / TIFFA) Most Important | Detailed fetal anatomy — heart, brain, spine, limbs, kidneys. Detects >80% of structural anomalies |
| 24–28 | 75g OGTT (gestational diabetes) India | GDM prevalence is very high in Indian women (16–17%). DIPSI protocol: 75g glucose, 2h blood sugar ≥140 mg/dL = GDM |
| 28 | Anti-D injection | For Rh-negative mothers. Prevents Rh incompatibility in subsequent pregnancies |
| 30–32 | Growth scan + Colour Doppler | Estimate fetal weight, liquor, placental position. Uterine and umbilical artery Doppler for IUGR screening |
| 36 | Group B Streptococcus (GBS) swab | Recommended in tertiary centres. If positive, IV antibiotics in labour to prevent neonatal sepsis |
| 36–40 | Final growth scan / CTG | Fetal wellbeing, presentation (vertex/breech), decide delivery plan |
⚠️ PC-PNDT Act: Sex determination of the foetus is illegal in India under the PC-PNDT Act 1994. All registered ultrasound centres must maintain Form F for every scan. Violations carry imprisonment up to 3 years.
🏛️ Government Schemes for Pregnant Women in India
PMMVY
₹5,000
Pradhan Mantri Matru Vandana Yojana — cash benefit for first live birth in 3 instalments. Apply at Anganwadi / ASHA worker within 270 days of conception
Janani Suraksha Yojana (JSY)
₹1,400–1,600
Cash incentive for institutional delivery in government hospitals for BPL mothers. Higher amount for rural areas. Applied through ANM/ASHA
JSSK
Free
Janani Shishu Suraksha Karyakram — free ANC, delivery, C-section, postnatal care, newborn care, and medicines at all government facilities. No out-of-pocket expenses
PM-SURAKSHA
Free ANC
PM Surakshit Matritva Abhiyan — free comprehensive ANC on the 9th of every month at government facilities. Includes blood tests, iron, calcium, and doctor consultation
Documents needed: Aadhaar card, MCP (Mother & Child Protection) card, BPL card (if applicable), bank account details. Register through your nearest Anganwadi centre or ANM at the sub-centre.
🥗 Indian Pregnancy Nutrition Guide
First Trimester (Weeks 1–13)
- Folic acid 5 mg/day: Neural tube defect prevention — start before conception, continue till 12 weeks. Available free at government hospitals
- Iron + Folic acid (IFA): Start from first trimester — ICMR recommends 180 mg elemental iron + 500 µg folic acid daily for anaemia prevention
- Ginger tea / jeera water: Safe home remedies for nausea. Small frequent meals. Avoid raw papaya, pineapple, sesame seeds in large amounts
Second Trimester (Weeks 14–27)
- Calcium 1000–1200 mg/day: Essential for fetal bone formation. Sources: milk, curd, paneer, ragi, til (sesame). Calcium carbonate supplements commonly prescribed in India
- Protein 70–100 g/day: Dal, rajma, chana, eggs, milk, paneer. Very high need — most Indian women are protein-deficient in pregnancy
- OGTT at 24–28 weeks: Indian women have 4× higher risk of GDM. DIPSI protocol: 75g glucose (non-fasting), 2h BS ≥140 mg/dL = GDM. Requires immediate dietary modification
Third Trimester (Weeks 28–40)
- Iron absorption: Take iron tablets at bedtime, not with milk or tea. Vitamin C (amla, lemon) improves absorption. Common side effect: dark stools (normal)
- Omega-3 (DHA): Walnuts, flaxseeds, fatty fish (safe 2x/week). Important for fetal brain development. Many obstetricians prescribe DHA supplements from second trimester
- Avoid: Alcohol completely, raw/undercooked meat, unpasteurised milk, excess Vitamin A (liver, cod liver oil), caffeine >200 mg/day (<2 cups of tea)
🚑 Signs of Labour — When to Go to Hospital
🚨 Go to hospital immediately if: heavy vaginal bleeding, severe headache + visual disturbance (pre-eclampsia), no fetal movement for >2 hours, cord prolapse, or severe abdominal pain at any gestation.
True Labour Signs (after 37 weeks)
- Regular contractions: Every 5 minutes, lasting 60 seconds, for 1 hour — the "5-1-1 rule". Contractions start in the back and radiate to the front. Getting stronger, longer, closer together
- Rupture of membranes (water breaking): Sudden gush or continuous trickle of clear/pale yellow fluid. Go to hospital within 1–2 hours even without contractions — risk of cord prolapse and infection after 18 hours
- Show (bloody mucus plug): Passage of mucus mixed with blood — labour usually begins within 24–48 hours. Not an emergency, but alert your doctor
- Reduced fetal movements: Less than 10 movements in 2 hours at any point in third trimester — go to hospital for CTG monitoring immediately
Kick Count (After 28 Weeks)
Count kicks daily — aim for 10 movements within 2 hours after a meal when the baby is usually most active. Keep a kick count diary. This is the most important self-monitoring tool in the third trimester and can detect fetal distress early.
❓ Frequently Asked Questions
Related Calculators
⚠ Medical Disclaimer: This calculator provides an estimated due date only. Clinical decisions including EDD confirmation, gestational age assessment, and pregnancy management must be made by a registered obstetrician or gynaecologist. All calculations follow FOGSI and WHO guidelines.