Pregnancy Progress0w 0d / 40w 0d
LMP13w26wDue Date
Trimester Guide
1st TrimesterWeek 1–13
Development of major organs.
2nd TrimesterWeek 14–26
Baby starts moving & growing rapidly.
3rd TrimesterWeek 27–40
Final development before birth.
Method: Naegele's Rule — LMP + 9 months + 7 days (equals LMP + 280 days).