🔄 Due Date Calculator for Irregular Periods — 免费在线工具
根据末次月经(LMP)计算due date calculator for irregular periods。获取预产期、孕期三阶段、怀孕周数和重要里程碑。
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Frequently Asked Questions — 预产期计算器
预产期如何计算？+
使用Naegele法则：在末次月经(LMP)第一天加280天(40周)。如果您的周期不是28天，计算器会自动调整。
预产期有多准确？+
LMP法预产期对大多数妊娠准确度在±2周内。仅4%的婴儿在预产期当天出生。8-12周B超最准确。
怀孕三阶段是什么？+
孕早期(1-13周)、孕中期(14-27周)、孕晚期(28-40周)。37周起为足月。
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