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First Trimester of Pregnancy

Weeks 1-13: The beginning of your pregnancy journey. A time of rapid development and major changes.

What to Expect

  • •Confirming your pregnancy
  • •Morning sickness and fatigue
  • •Your baby's organs begin forming
  • •First prenatal appointments
  • •Increased emotions and mood changes

Key Milestones

  • •Week 4: Positive pregnancy test
  • •Week 5-6: Baby's heart starts beating
  • •Week 8: Baby is now called a fetus
  • •Week 12: Risk of miscarriage decreases significantly
  • •Week 13: End of first trimester!

Common First Trimester Symptoms

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Morning Sickness

Nausea and vomiting, especially in the morning

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Fatigue

Extreme tiredness due to hormonal changes

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Food Cravings

Strange food preferences and aversions

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Mood Swings

Emotional ups and downs

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Frequent Urination

Need to pee more often

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Breast Tenderness

Sore and swollen breasts

First Trimester Nutrition

Focus on:

  • Folic acid (400-800 mcg daily) for neural tube development
  • Iron-rich foods to support increased blood volume
  • Small, frequent meals to combat nausea
  • Staying hydrated with water throughout the day
  • Avoiding raw or undercooked foods

Foods to avoid: Raw fish, undercooked meat, unpasteurized dairy, deli meats, high-mercury fish, raw eggs, and excessive caffeine (limit to 200mg/day).

Browse First Trimester Week by Week

1
Poppy seed
2
Poppy seed
3
Sesame seed
4
Poppy seed
5
Sesame seed
6
Lentil
7
Blueberry
8
Kidney bean
9
Grape
10
Kumquat
11
Fig
12
Lime
13
Peapod

Track Your Pregnancy Week by Week

Get detailed information for each week of your first trimester

View All Weeks