Gestation is divided into 3 time periods, called _______. What are they?

Gestation is divided into 3 time periods, called _______. What are they? 


  1. -Trimesters
  2. -First: Last Menstrual Period (LMP) to 12 weeks
  3. -Second: 13 to 27 weeks
  4. -Third: 28 to EDD