Second trimester

Pregnancy Week 22

A practical week 22 guide covering fetal development, symptoms, nutrition, prenatal tests, baby size comparison, and warning signs to discuss with your care team.

Week 22 ยท ear of corn

Fetal development

Taste buds mature, and the fetus may respond more to sound.

Baby size comparison

Around week 22, baby is roughly comparable to a ear of corn. Estimated size: about 11.8 inches and 20.8 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 15-22: Second-trimester serum screening or AFP depending on prior screening choices.
  • Weeks 18-22: Anatomy ultrasound to review fetal growth and major structures.

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.