Yes. All pregnancy data is encrypted and never shared. You can use the calculators completely anonymously. We do not store personally identifiable information, and nothing is shared with third parties.

Pregnalyze calculators are built using published medical studies and population research — not generative AI. We include more clinical and lifestyle factors than basic calculators, provide clear factor breakdowns, and are transparent about our methodology and limitations.

No. Pregnalyze is for informational purposes only and does not replace professional medical care, diagnosis, or treatment. Always consult your healthcare provider regarding your pregnancy and any health concerns.

No account required. Simply enter your information, receive your results, and you're done. It's that simple.

Yes, our miscarriage risk calculator is based on 50+ peer-reviewed studies published in leading medical journals, using data from more than 500,000 pregnancies. It provides statistical risk estimates based on validated research, not medical diagnosis or prediction. Always consult your healthcare provider for medical advice specific to your pregnancy.

No. This tool provides statistical miscarriage risk estimates only and cannot diagnose or rule out any medical condition. If you experience bleeding, cramping, or concerning pregnancy symptoms, contact your healthcare provider immediately.

The miscarriage risk calculator provides estimates from 4 weeks to 19 weeks 6 days of pregnancy (the clinical definition of early pregnancy loss). It is designed for singleton pregnancies and is not validated for twins or multiples.

The calculator is optimized for singleton pregnancies up to 19 weeks and 6 days. It is designed for single pregnancies and is not validated for twins or multiples.

This calculator estimates the probability of a live birth in a future pregnancy after experiencing pregnancy loss. It uses published clinical data on factors like age, pregnancy history, medical conditions, and lifestyle to provide a personalized estimate.

You can use the calculator at any time to understand factors that may influence future pregnancy outcomes. However, the timing of when to try again is a personal and medical decision that should be discussed with your healthcare provider.

Yes. The TTC calculator includes partner-related factors such as partner age and sperm quality indicators, which research shows can influence conception and pregnancy outcomes.

Based on your profile, the calculator may list commonly discussed evaluations and supplements for people with similar TTC histories. These are informational only and should be discussed with your healthcare provider before taking any action.

hCG (human chorionic gonadotropin) is a hormone produced during pregnancy. In early pregnancy, hCG levels typically rise in a predictable pattern. Tracking how your hCG changes over time can provide context about your pregnancy progression.

In most healthy early pregnancies (with hCG under 1,200 mIU/mL), levels typically double every 48 to 72 hours. As hCG levels increase, the doubling rate naturally slows down. A doubling time within this range is statistically associated with viable pregnancies.

A slower-than-average hCG rise does not by itself determine pregnancy outcome. Slow-rising hCG can occur in healthy pregnancies, but interpretation depends on the overall pattern over time, gestational age, ultrasound findings, and clinical symptoms. Consult your healthcare provider for follow-up testing.

No. This calculator cannot diagnose any condition including ectopic pregnancy. It only compares your hCG changes to typical patterns. If you have concerns about ectopic pregnancy or experience symptoms like severe pain, contact your healthcare provider immediately.

The calculator uses standard clinical dating methods. For LMP-based calculations, it uses Naegele's rule (adding 280 days to the first day of your last period). For IVF, it adjusts based on transfer day. Ultrasound-based estimates use the measured gestational age.

First-trimester ultrasound dating is generally considered the most accurate method. IVF transfer dates are also highly accurate since conception timing is known. LMP-based dating assumes a 28-day cycle with ovulation on day 14, which may vary between individuals.

Due dates may be adjusted after an early ultrasound if the measured gestational age differs significantly from the LMP-based estimate. This is common and usually means you ovulated earlier or later than day 14 of your cycle.

Only about 4-5% of babies are born on their exact due date. Most babies arrive within two weeks before or after. The estimated due date is a midpoint of a normal delivery window, not a precise prediction.

The calculator uses the Institute of Medicine (IOM) 2009 guidelines for pregnancy weight gain, which are widely used by healthcare providers. Recommendations are based on your pre-pregnancy BMI category and adjusted for singleton or twin pregnancies.

Recommended weight gain depends on your pre-pregnancy BMI. For singleton pregnancies: underweight (28-40 lbs), normal weight (25-35 lbs), overweight (15-25 lbs), and obese (11-20 lbs). Twin pregnancies have higher recommended ranges.

Weight patterns can vary during pregnancy, and being slightly outside the range is common. The recommendations are guidelines, not strict rules. If you have concerns about your weight gain pattern, discuss it with your healthcare provider who can interpret it in the context of your overall health.

Yes. The calculator includes an option for twin pregnancies and uses the IOM twin-specific weight gain guidelines, which recommend higher weight gain than singleton pregnancies across all BMI categories.