Medical & Educational Disclaimer

1. Non-Diagnostic Educational Service

All calculations executed on this website—including Estimated Date of Delivery (EDD), gestational age in weeks and days, conception window estimates, and trimester benchmarks—are mathematical approximations derived from standardized clinical formulas (such as Naegele's Rule and ACOG Committee Opinions).

Human biological gestation naturally varies. Factors such as individual cycle length irregularity, implantation timing, maternal age, multiple gestations (twins/triplets), and embryonic growth kinetics mean that actual delivery dates and developmental milestones often differ from calculated outputs.

2. Absence of Physician-Patient Relationship

Using Pregnancy Calculator, reading our educational guides, or communicating with our team via contact forms or email does not establish a doctor-patient, midwife-patient, or healthcare provider relationship between you and Pregnancy Calculator, its operators, authors, or medical reviewers.

You should not use the information on this website to diagnose or treat any health condition, manage pregnancy complications, or adjust any prescribed medication without direct consultation with your obstetrician, certified nurse-midwife, or maternal-fetal specialist.

3. Due Dates Are Estimates, Not Deadlines

According to peer-reviewed obstetrical data published by the American College of Obstetricians and Gynecologists (ACOG), only approximately 4% to 5% of pregnant individuals deliver on their exact estimated due date. A normal, healthy, full-term delivery naturally spans between 37 weeks 0 days and 41 weeks 6 days.

A calculated due date serves as a clinical reference point for monitoring fetal growth and scheduling routine antenatal screenings. It should never be interpreted as an exact or guaranteed date of labor onset.

4. Acute Symptoms Requiring Immediate Medical Attention

If you are pregnant and experiencing any of the following warning symptoms, do not rely on website calculators or wait for an email response. Seek immediate emergency medical evaluation or contact your obstetric triage unit:

• Significant vaginal bleeding or fluid leakage
• Severe abdominal or sharp unilateral pelvic pain
• Noticeable reduction or sudden cessation of fetal movement after 28 weeks
• Persistent severe headaches, visual disturbances, or sudden swelling of face/hands (potential signs of preeclampsia)
• High fever, persistent vomiting, or inability to retain fluids
• Regular, painful uterine contractions prior to 37 completed weeks

5. Third-Party Advertisements & Commercial Independence

Pregnancy Calculator displays advertisements through Google AdSense to support the free operation and maintenance of our clinical tools. Advertisements are labeled with “Advertisement” identifiers.

The display of third-party advertisements, commercial links, or sponsors does not constitute an endorsement, guarantee, or medical recommendation by Pregnancy Calculator. We do not endorse specific commercial prenatal vitamins, hospital systems, fertility clinics, or baby products appearing in third-party ad networks.

6. Limitation of Liability

To the fullest extent permitted by applicable law, Pregnancy Calculator and its authors, developers, and contributors disclaim all liability for any loss, injury, health complication, or damages arising directly or indirectly from the use of, reference to, or reliance upon the calculation tools, timelines, or educational content published on this website.

7. Contact & Inquiries

For questions regarding our medical disclaimers, calculation formulas, or editorial standards: