孕期计算器
结果仅供估算，重大医疗决定请咨询专业人员。
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2% – 55% reference display (not a diagnosis)
结果仅供估算，重大医疗决定请咨询专业人员。
常见问题
常见问题 — 孕期计算器
The calculator gives an estimate based on your entries; read the notes below and seek professional guidance when necessary.
Is this medical advice?
No. This calculator offers an estimate, not a medical diagnosis or treatment plan.
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A pregnancy is conventionally estimated at 280 days (40 weeks) from the first day of the last menstrual period for a 28-day cycle. Cycle adjustments provide only a rough prediction; ovulation timing varies. Early ultrasound is generally the most accurate method of confirming gestational age. Do not use this result to make medical or scheduling decisions without your clinician.
结果仅供估算，重大医疗决定请咨询专业人员。