Pregnancy Week Calculator

Track your pregnancy progress week by week

Enter the first day of your last menstrual period to calculate your current pregnancy week.
Pregnancy Timeline
First Trimester (1-12 weeks)
  • Morning sickness may begin
  • Major organs develop
  • First prenatal appointment
  • Heart starts beating
Second Trimester (13-27 weeks)
  • Energy levels increase
  • Baby movements felt
  • Anatomy scan (18-22 weeks)
  • Gender can be determined
Third Trimester (28-40 weeks)
  • Rapid weight gain
  • Baby's lungs mature
  • Prepare for delivery
  • Full-term at 37 weeks