First trimester

Pregnancy Week 11

A practical week 11 guide covering fetal development, symptoms, nutrition, prenatal tests, baby size comparison, and warning signs to discuss with your care team.

Week 11 ยท lemon

Fetal development

Reflexes are developing, and the fetus may make small swallowing motions.

Baby size comparison

Around week 11, baby is roughly comparable to a lemon. Estimated size: about 3.4 inches and 1.5 ounces, with natural variation.

Common symptoms

  • Energy, appetite, sleep, and digestion may change.
  • Some people notice cramps, bloating, skin changes, or back discomfort.
  • Symptoms vary widely, and absence of a symptom does not always mean a problem.

Tests and appointments

  • Weeks 8-12: First prenatal visit, blood type/Rh, CBC, urine test, infection screening, and dating ultrasound if indicated.
  • Weeks 10-13: Optional NIPT screening and carrier screening discussion.
  • Weeks 11-14: Nuchal translucency ultrasound if chosen and available.

Nutrition focus

  • Include protein, fiber-rich carbohydrates, colorful produce, and healthy fats.
  • Ask about iron, folic acid, iodine, vitamin D, choline, and omega-3 needs.
  • Follow local food-safety advice for fish, caffeine, unpasteurized foods, and supplements.

Warning signs

  • Call your care team for heavy bleeding, severe pain, fever, fainting, severe headache, vision changes, fluid leakage, or decreased fetal movement later in pregnancy.
  • Emergency symptoms should be handled urgently according to local medical guidance.

Medical disclaimer

This week-by-week pregnancy content is educational and does not replace care from a qualified healthcare professional.