What aspects should be paid attention to during early pregnancy?

During the first trimester of pregnancy—spanning weeks 1 through 12—rapid embryonic and fetal development occurs, making this a critically sensitive period for maternal health and prenatal care. Key priorities include confirming pregnancy with a clinical evaluation and early ultrasound (typically between 6–10 weeks) to assess gestational age, viability, and number of embryos. Prenatal vitamins containing at least 400–800 mcg of folic acid should be initiated immediately—or ideally before conception—to significantly reduce the risk of neural tube defects.

Women should avoid known teratogens: alcohol, tobacco, recreational drugs, and non-essential medications (especially retinoids, ACE inhibitors, NSAIDs after week 20, and certain antibiotics). Over-the-counter medications and herbal supplements require provider review prior to use. Food safety is essential—avoid raw or undercooked meat, unpasteurized dairy and juices, deli meats unless reheated to steaming, and high-mercury fish (e.g., shark, swordfish, king mackerel).

Common symptoms such as nausea, fatigue, breast tenderness, and frequent urination are typical but warrant evaluation if severe (e.g., persistent vomiting leading to weight loss or dehydration—possible hyperemesis gravidarum). Early signs of complications—including vaginal bleeding, severe abdominal pain, or sudden loss of pregnancy symptoms—require prompt medical assessment to rule out ectopic pregnancy, miscarriage, or other urgent conditions.

Establishing care with an obstetrician or certified midwife by 8–10 weeks allows for timely screening (e.g., blood type, Rh factor, CBC, STI testing, hepatitis B/C, HIV, rubella immunity) and personalized counseling on nutrition, physical activity, mental health, and lifestyle modifications. Emotional well-being is integral; anxiety and mood changes are common, and evidence-based support—including psychoeducation and referral when indicated—should be offered proactively.