Confirmation of Pregnancy: Most women confirm their pregnancy during this trimester, often through home pregnancy tests and subsequent visits to a healthcare provider for confirmation.

Physical Changes: – Breast Changes: Your breasts may become tender, swollen, or sore as they prepare for milk production. – Fatigue: Many women experience extreme tiredness due to the increased levels of the hormone progesterone. – Morning Sickness: Nausea and vomiting, often called "morning sickness," can occur at any time of the day.

Emotional Changes: Hormonal fluctuations can also impact your mood. You may experience mood swings, irritability, or heightened emotions.

Prenatal Care: It's important to start prenatal care early in pregnancy. You'll have your first prenatal appointment, during which your healthcare provider will confirm the pregnancy,

Diet and Nutrition: Eating a well-balanced and nutritious diet is essential during the first trimester. You should begin taking prenatal vitamins containing folic acid, iron, and other essential nutrients.

Avoid Harmful Substances: It's important to avoid alcohol, smoking, and recreational drugs as they can harm the developing fetus.

Monitor Weight Gain: Weight gain should be gradual and steady. Most women do not need to gain much weight during the first trimester, and some may even lose weight due to morning sickness.

Fetal Development: During the first trimester, the embryo undergoes rapid development. By the end of the first trimester, all major organ systems have begun to form, and the fetus is about 2.5 to 3 inches long.

Screening Tests: You may have various tests and screenings, including the first-trimester screening for genetic disorders like Down syndrome.