Professional pregnancy calendar management tool: supports monthly/weekly views, schedule management, lunar & holiday display, smart reminders for check-ups and milestones, record every beautiful moment during pregnancy, making pregnancy life more organized.
Get Started View FeaturesEnter your due date or last menstrual period, the system will automatically generate a complete pregnancy calendar
Support monthly, weekly, and list views to meet different usage habits
Integrated lunar calendar display including traditional solar terms and holiday information
Automatically remind check-up times and important milestones, never miss any important moments
Support adding custom events to record every beautiful moment during pregnancy
Based on international obstetrics and gynecology standard algorithms, providing personalized pregnancy timeline management for every expectant mother
Using the internationally accepted Naegele's rule to calculate due date: first day of last menstrual period + 280 days (40 weeks). The system automatically considers individual differences in menstrual cycles and provides special calculation modes for IVF, artificial insemination, and other special conception methods.
Dynamic calculation based on current date and last menstrual period/due date, displaying accurate pregnancy weeks and remaining days in real-time. The system automatically identifies three pregnancy stages: first trimester (1-12 weeks), second trimester (13-28 weeks), and third trimester (29-40 weeks).
Automatically configure check-up schedules according to international prenatal care guidelines (ACOG, RCOG standards), including important examination nodes such as NT scan, Down syndrome screening, anatomy scan, glucose tolerance test, etc., with support for personalized reminder settings.
Integrates lunar calendar, almanac, twenty-four solar terms, traditional festivals and other information to meet the traditional cultural needs of Chinese users. Supports features such as lunar birthday records and traditional seasonal diet reminders.
From beginner to expert, fully understand how to make the most of the pregnancy calendar tool
Menstrual Cycle: The interval between the first days of two menstrual periods, normal range 21-35 days
Pregnancy Type: Different conception methods affect due date calculation
Data Import: Support importing existing data from other calendar applications
Lunar calendar display switch to meet different user habits
Holiday marking for reasonable check-up scheduling
Pregnancy week display for intuitive understanding of current progress
Data Export: Support iCal, PDF and other formats
Print Function: Optimized print layout for paper backup
Data Sync: Support data synchronization between multiple devices
Pregnancy knowledge reviewed by professional medical teams to help you scientifically navigate every day of pregnancy
6-8 weeks: First ultrasound to confirm intrauterine pregnancy
11-13 weeks: NT ultrasound, early Down syndrome screening
Throughout pregnancy: Folic acid supplementation, avoid strenuous exercise
The first trimester is the critical period for fetal organ formation. Avoid contact with harmful substances, maintain a pleasant mood, and seek immediate medical attention for severe abdominal pain or bleeding.
16-18 weeks: Mid-pregnancy Down syndrome screening, optional non-invasive DNA
20-24 weeks: Systematic ultrasound (anatomy scan)
24-28 weeks: Gestational diabetes screening (glucose tolerance test)
Increase protein, calcium, and iron intake, supplement DHA daily, control sugar intake to prevent gestational diabetes, appropriate exercise such as prenatal yoga.
28-36 weeks: Check-up every 2 weeks, monitor fetal development
36-40 weeks: Weekly check-ups, assess delivery method
Key examinations: Fetal heart monitoring, ultrasound, pelvic measurement
Regular contractions, water breaking, and bloody show are the three major labor signs. Prepare your hospital bag, understand the delivery process, and choose appropriate delivery hospital and method.
| Pregnancy Stage | Key Nutrients | Recommended Foods |
|---|---|---|
| First Trimester | Folic acid, Vitamin B6 | Leafy vegetables, nuts, whole grains |
| Second Trimester | Calcium, Iron, DHA | Dairy products, lean meat, deep-sea fish |
| Third Trimester | Iron, Zinc, Vitamin K | Red meat, eggs, fermented foods |
Stop exercising immediately and consult a doctor if you experience vaginal bleeding, persistent headache, chest pain, difficulty breathing, or calf pain and swelling.
Professional, safe, and caring - the common choice of hundreds of thousands of expectant mothers
Based on International Federation of Gynecology and Obstetrics (FIGO) standard algorithms, all calculation results are verified by professional medical teams to ensure medical accuracy of every data point.
Following WCAG 2.1 accessibility standards, supporting screen readers and high contrast mode, allowing every expectant mother to use it easily.
Using bank-level encryption technology, your personal health data is only stored locally and will not be uploaded to any server, completely protecting your privacy and security.
Designed specifically for Chinese expectant mothers, integrating lunar calendar, solar terms, and traditional festivals, supporting Chinese voice reminders, perfectly fitting Chinese usage habits.
"This pregnancy calendar is really practical! Reminders for every check-up, never forget important examinations. The lunar calendar display is also thoughtful, elderly family members can understand it too."
"The IVF function is excellent! Specially designed for our special situation, very accurate calculations. Even doctors say this due date calculation is very professional."
"As a second-time mom, this tool helps me manage check-up schedules for both babies very well. The export function is convenient, I can share data with family."
Collection of most frequently asked professional questions, answered by obstetricians
Error Range: Based on Naegele's rule calculation using last menstrual period, normal menstrual cycle (28 days) has an error of about ±2 weeks. Influencing factors include:
Adjustment Methods: It is recommended to combine with early ultrasound (6-12 weeks) to measure fetal size and correct due date through crown-rump length (CRL), which can reduce error to within ±5 days.
Calculation Basis: IVF due date calculation is based on embryo transfer date, not last menstrual period:
Special Cases: For ovulation induction cycles, actual conception time is about 2 weeks earlier than natural cycles, so last menstrual period calculation cannot be used directly.
Standard Check-up Schedule (Singleton):
| Pregnancy Week | Examination Items | Importance |
|---|---|---|
| 6-8 weeks | Confirm intrauterine pregnancy, fetal heartbeat | Rule out ectopic pregnancy |
| 11-13 weeks | NT scan, early Down syndrome screening | Chromosomal abnormality screening |
| 16-18 weeks | Mid-pregnancy Down syndrome screening, non-invasive DNA | Further chromosomal screening |
| 20-24 weeks | Systematic ultrasound (anatomy scan) | Structural malformation screening |
| 24-28 weeks | Glucose tolerance test | Gestational diabetes screening |
Individualized Adjustment: High-risk pregnant women need increased check-up frequency, please follow doctor's advice.
Due Date Differences: Multiple pregnancies usually deliver early:
Check-up Frequency: Twin pregnancies require check-ups every 2 weeks after 16 weeks, triplets and above may need weekly check-ups.
Special Monitoring: More frequent ultrasound examinations are needed to monitor fetal growth differences.
Privacy Protection Commitment:
Data Ownership: You have complete control over your data and can export or delete all data at any time.
Device Compatibility:
Network Requirements:
We understand this is a sensitive topic and provide the following support:
Professional Advice: It is recommended to proceed with next pregnancy planning under medical guidance, giving the body sufficient recovery time.
Supported Data Formats:
Third-party Integration:
Covering all aspects of pregnancy time management, providing comprehensive knowledge support
Learn to correctly interpret pregnancy calendar and master key information for each pregnancy stage.
Step-by-step guide to creating personalized pregnancy cycle calendar to record beautiful pregnancy moments.
Scientific pregnancy schedule management methods to make your pregnancy life more organized.
Detailed explanation of pregnancy week calculation methods to solve various questions about pregnancy week calculation.
Comprehensive overview of important time nodes during pregnancy to ensure no critical moments are missed.
Correct usage of online due date calculator for quick and accurate calculation of baby's birth date.