怀孕预产期

复制from datetime import datetime, timedelta

# 输入：末次月经第一天（LMP）
lmp = datetime(2025, 1, 15)

# 预产期：LMP + 280 天（Naegele 规则）
edd = lmp + timedelta(days=280)
print(f"预产期: {edd.strftime('%Y-%m-%d')}")  # 2025-10-22

# 当前孕周（假设今天是 2025-06-01）
today = datetime(2025, 6, 1)
days_pregnant = (today - lmp).days
weeks = days_pregnant // 7
days = days_pregnant % 7
print(f"当前孕周: {weeks}周{days}天")  # 19周4天

# 当前阶段
if weeks < 13:
    stage = "孕早期"
elif weeks < 28:
    stage = "孕中期"
else:
    stage = "孕晚期"
print(f"当前阶段: {stage}")  # 孕中期

复制package main

import (
	"fmt"
	"time"
)

func main() {
	// 输入：末次月经第一天
	lmp := time.Date(2025, 1, 15, 0, 0, 0, 0, time.UTC)

	// 预产期：LMP + 280 天
	edd := lmp.Add(280 * 24 * time.Hour)
	fmt.Printf("预产期: %s\n", edd.Format("2006-01-02")) // 2025-10-22

	// 当前孕周（假设今天是 2025-06-01）
	today := time.Date(2025, 6, 1, 0, 0, 0, 0, time.UTC)
	daysPregnant := int(today.Sub(lmp).Hours() / 24)
	weeks := daysPregnant / 7
	days := daysPregnant % 7
	fmt.Printf("当前孕周: %d周%d天\n", weeks, days) // 19周4天

	// 当前阶段
	var stage string
	switch {
	case weeks < 13:
		stage = "孕早期"
	case weeks < 28:
		stage = "孕中期"
	default:
		stage = "孕晚期"
	}
	fmt.Printf("当前阶段: %s\n", stage) // 孕中期
}

复制// 输入：末次月经第一天（LMP）
const lmp = new Date(2025, 0, 15); // 月份从0开始

// 预产期：LMP + 280 天（Naegele 规则）
const edd = new Date(lmp);
edd.setDate(edd.getDate() + 280);
console.log(`预产期: ${edd.toISOString().slice(0, 10)}`); // 2025-10-22

// 当前孕周（假设今天是 2025-06-01）
const today = new Date(2025, 5, 1);
const daysPregnant = Math.floor((today - lmp) / (1000 * 60 * 60 * 24));
const weeks = Math.floor(daysPregnant / 7);
const days = daysPregnant % 7;
console.log(`当前孕周: ${weeks}周${days}天`); // 19周4天

// 当前阶段
let stage;
if (weeks < 13) {
  stage = '孕早期';
} else if (weeks < 28) {
  stage = '孕中期';
} else {
  stage = '孕晚期';
}
console.log(`当前阶段: ${stage}`); // 孕中期