Start counting from the first day of your last menstrual period
Count pregnancy in weeks, not months, for the most accurate tracking
Divide the total weeks by about 4 to estimate months
4 weeks is about 1 month
8 weeks is about 2 months
12 weeks is about 3 months
16 weeks is about 4 months
20 weeks is about 5 months
24 weeks is about 6 months
28 weeks is about 7 months
32 weeks is about 8 months
36 weeks is about 9 months
Use an ultrasound or doctor’s due date estimate for the most accurate timeline