Pregnancy FAQs

Yes. Every calculator and guide on pregnancycalculator.in is completely free, with no sign-up or login.

No. All calculations run inside your own browser. The dates, weights and other details you enter are never sent to us or stored anywhere. If you use the Share button, your inputs are placed in the link you choose to share.

The arithmetic is exact and follows the same rules obstetricians use (Naegele’s rule with cycle-length adjustment, IVF embryo-age formulas and ultrasound dating). But a due date is always an estimate: only about 4–5% of babies are born on the day, and most arrive within two weeks either side.

Use your last period (LMP) if you know it and your cycles are fairly regular. Use the IVF tab if you conceived through IVF or FET. If you’ve had a first-trimester scan, the Ultrasound tab – or the due date your doctor gave you – is the most accurate.

Your doctor may have adjusted your due date after an early ultrasound showed the baby measuring bigger or smaller than LMP dates predicted. Enter the doctor’s date in the ‘Due date’ tab so all results match their dates.

Yes. Use ‘Add to calendar’ to download your key dates to Google, Apple or Outlook calendars, ‘Share’ to send a link, or ‘Print’ to print just your results.

The first day of the last period is a date most women know, while the exact day of conception is rarely known. Counting from the LMP gives everyone a shared starting point, which is why you’re considered about 2 weeks pregnant at conception.

Both. 40 weeks from the LMP is about 9 calendar months and one week. If you count four-week months, it’s 10. Doctors always use weeks because they’re more precise.

It means 12 completed weeks and 3 days of pregnancy. At 12+3 you are in your 13th week.

The first trimester runs from week 1 to 13 weeks 6 days, the second from 14 weeks to 27 weeks 6 days, and the third from 28 weeks until birth.

The most reliable time is from the day your period is due. Sensitive tests may detect pregnancy a few days earlier, but a negative result then doesn’t rule it out. If you don’t know when your period is due, test 21 days after unprotected sex.

Book your first antenatal visit as soon as possible, ideally by 8–10 weeks. See a doctor urgently if you have heavy bleeding, severe one-sided pain, shoulder-tip pain or fainting.

Light spotting can happen around implantation or after an internal examination, and is often harmless. But any bleeding in pregnancy should be reported to your doctor, and heavy bleeding or bleeding with pain needs urgent care.

400 micrograms daily is usually recommended from at least a month before conception until 12 weeks. Your doctor may prescribe a higher dose if you have certain risk factors. In India, iron-folic acid tablets are then usually given from the second trimester.

Commonly a dating scan at 6–9 weeks, an NT scan at 11–13+6 weeks, an anomaly (Level-II) scan at 18–22 weeks and a growth scan at 28–32 weeks. Your doctor may add others as needed.

Determining or disclosing the sex of a fetus is illegal in India under the PCPNDT Act, 1994, so scan centres will not tell you. No calculator or chart can predict a baby’s sex either.

Indian national guidelines recommend a 75 g glucose test at the first antenatal visit and again at 24–28 weeks. Your doctor will advise on timing.

It depends on your BMI before pregnancy. For a normal BMI, around 11.5–16 kg is recommended for a single baby. Try our weight gain calculator for a personalised week-by-week range.

For most healthy pregnancies, yes. Around 150 minutes a week of moderate activity such as brisk walking, swimming or prenatal yoga is beneficial. Check with your doctor first, especially if you have complications.

Most women feel movements from 16–24 weeks. From then on, if you notice your baby moving less than usual, or the pattern changes, contact your doctor or hospital the same day – don’t wait until the next day.

No. Our content is for general education and is based on published guidance from bodies like ACOG, WHO and India’s Ministry of Health. Always follow the advice of your own doctor. Please read our medical disclaimer.

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