26 Weeks of Pregnancy: What’s Happening? Let’s explore the changes happening with you and your baby during the 26th week of pregnancy. Baby’s Development • Size: About 35.6 cm and 900 grams, roughly the size of a large cucumber. • Key Milestone: • Viability: The baby is now considered viable, meaning it can survive outside the uterus with medical help. • Growth Highlights: • The lungs are developing, and surfactant, which is essential for breathing, is now being produced. • Senses are fully deve