Your baby's lungs are developing, with air sacs (alveoli) forming and starting to produce surfactant, which keeps the lungs from collapsing after birth.
mother_symptoms
Your uterus is about the size of a soccer ball. You may experience heartburn as your growing uterus puts pressure on your stomach.
tips_and_recommendations
Sleep on your left side to improve circulation to your heart, which in turn improves blood flow to the fetus and kidneys.
