first trimester

The first trimester is the initial stage of pregnancy, lasting about 12 weeks from the first day of your last period. During this time, the fertilized egg develops into an embryo and then a fetus. Major organs and body systems begin to form, and the body undergoes hormonal changes that affect mood, energy, and physical symptoms like nausea or fatigue. This period is crucial for healthy development, and regular medical checkups help monitor progress and address any concerns. It sets the foundation for the growth and development of your baby throughout pregnancy.