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🌱First Trimester•Weeks 1-13
Week 1 of Pregnancy
Your baby is the size of poppy seed
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Length
Less than 0.1 inches
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Weight
Less than 1 gram
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Size Comparison
Poppy seed
👶 Baby Development
- •Conception typically occurs at the end of week 2, marking the true beginning of pregnancy
- •Your body is preparing the uterine lining (endometrium) to receive a fertilized egg
- •Hormones like estrogen and progesterone are creating the ideal environment for implantation
- •The fertilized egg will begin its 3-4 day journey down the fallopian tube to the uterus
- •Rapid cell division begins immediately after fertilization, with cells doubling every 12-24 hours
💭 Common Symptoms
- •You may not know you're pregnant yet as conception hasn't occurred
- •Your last menstrual period marks the start of pregnancy calculations for medical dating purposes
- •Some women experience mild cramping and spotting during menstruation
- •Energy levels are typically normal during this pre-conception phase
- •No pregnancy-specific symptoms are present at this stage
🥗 Nutrition Tips
- •Start taking prenatal vitamins with 400-800 mcg of folic acid daily to prevent neural tube defects
- •Eat a balanced diet rich in colorful fruits and vegetables for essential vitamins and antioxidants
- •Include lean proteins like chicken, fish, beans, and tofu in your daily meals
- •Stay hydrated with at least 8-10 glasses of water per day
- •Limit caffeine intake to 200mg per day or less (about one 12-oz cup of coffee)
- •Avoid alcohol completely as you may conceive later this month
- •Eat foods rich in folate including leafy greens, citrus fruits, and fortified cereals
✅ To-Do This Week
- •Begin tracking your menstrual cycle with an app or calendar to identify your fertile window
- •Start taking prenatal vitamins now, before conception occurs
- •Schedule a preconception checkup with your healthcare provider
- •Review your current medications with a doctor to ensure they're safe for pregnancy
- •Maintain a healthy lifestyle with regular exercise and balanced nutrition
- •Limit exposure to harmful substances like alcohol, tobacco, and recreational drugs
- •Discuss your family medical history with your partner
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Did You Know?
Pregnancy is calculated from the first day of your last menstrual period, even though conception typically happens two weeks later. This dating method is why pregnancy is considered 40 weeks, even though fetal development is closer to 38 weeks.