Frequently Asked Questions About Pregnancy & the Calculators

Quick answers to what expecting mothers ask most.

How do I calculate my due date?

Enter the first day of your last period into the pregnancy calculator; it will give you the date in Gregorian and Hijri along with your current week.

Is calculating pregnancy in Hijri accurate?

Yes, equally accurate; pregnancy is 280 days in both calendars, and the conversion is approximate within +/- 2 days.

When can I know the baby's gender?

By ultrasound from weeks 18-22, or with an NIPT test from week 10.

What is the normal weight gain in pregnancy?

11.5-16 kg for a normal-weight woman, per IOM guidelines.

When does pregnancy show on a test?

A blood test can show it days before your period; a home test is 99% accurate a day after a missed period.

How do I calculate ovulation?

Ovulation happens 14 days before your next period; use the ovulation calculator.

Is nausea normal?

Yes, it affects 70-80% of pregnant women and usually improves after week 14.

When should I first see a doctor?

Between weeks 8 and 10 to start prenatal care and the basic tests.

Does this site's information replace my doctor?

No; all content is for guidance and medical follow-up is essential.

Is my data safe?

Yes; calculations run in your browser and we never send your data to any server.

Last reviewed: 2026-10-07

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