This article is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider with any concerns about your pregnancy.

How Big Is Your Baby?

Your baby is about the size of a kumquat — approximately 31-42 mm (measured crown to rump).

Your Baby's Development

Congratulations - the embryo is now officially a fetus! All vital organs are in place and beginning to function. The most critical development period is complete, reducing birth defect risk. The fetus can bend limbs, and tiny nails are forming on fingers and toes. Outer ears are fully developed. Bones are hardening from cartilage. The liver produces bile, kidneys produce urine. Weight about 4 grams.

Your Body This Week

  • Morning sickness may begin to improve as hCG levels plateau
  • Visible veins across chest and abdomen - blood volume increases 50%
  • Rounded lower abdomen - uterus is grapefruit-sized
  • Fatigue may ease slightly
  • Increased vaginal discharge continues
  • Occasional ligament pain with sudden movements
  • Pregnancy glow from increased blood flow

What to Do This Week

  • First trimester screening (combined test) may be offered weeks 10-13
  • NIPT can be done now for genetic screening
  • Consider announcing pregnancy - many wait until after screening
  • Start pelvic floor exercises (Kegels)
  • Review diet for adequate protein, iron, calcium
  • Research childcare options if applicable

Nutrition Tips

As nausea improves, reintroduce nutritious variety:

  • Lean protein - chicken, turkey, fish (2-3 servings low-mercury/week), eggs, legumes
  • Iron-rich foods - red meat, spinach, fortified cereals + vitamin C
  • Whole grains - oats, brown rice, whole wheat for fiber
  • Colorful fruits and vegetables - 5+ servings daily
  • Healthy fats - avocado, olive oil, nuts

Do not worry if weight gain has been minimal - normal for first trimester.

When to Call Your Doctor

Consult your provider if:

  • Nausea worsens instead of improving
  • Cannot keep fluids down for 12+ hours
  • Any bleeding occurs
  • Severe headaches unresponsive to rest and hydration
  • Persistent abdominal pain
  • Fever or signs of infection

With each week and confirmed heartbeat, miscarriage risk declines to about 1-2% by end of first trimester.