Backache is a common pregnancy ailment, especially in the later months of pregnancy. After the baby is born, the pain usually subsides. However, many women experience back pain for months following the delivery.
You can blame your aching back on your growing uterus. Your uterus expands, shifting your center of gravity and stretching and weakening your abdominal muscles. This alters your posture and strains your back. Furthermore, carrying extra weight entails more work for your musculature and doubled stress on your joints. This is why, at the end of the day, your back may feel worse.

