Trimester Planner
Week-by-Week Milestone Timeline
How It Works
The Logic
We reverse-calculate your estimated LMP from your due date (EDD minus 280 days, adjusted for cycle length), then map key milestones to specific weeks. Milestones follow ACOG guidelines: first trimester ends at week 12, viability at week 24, third trimester at week 28, and full term at week 36. The timeline highlights where you are today.
How to Use
Enter your due date and optional cycle length. The planner generates a week-by-week timeline with appointment reminders and development notes. Save timelines to compare different due dates or share with your partner or provider.
Pro Tips
- Book your anatomy scan (20 weeks) and glucose screening (24–28 weeks) early — these fill up fast.
- The "Current" badge shows where you are today; past milestones are faded so you can focus on what's ahead.
- If your provider gives a different due date, use that one — clinical judgment always beats calculators.
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