To what size does the uterus grow to at 9 months?

At 9 months of pregnancy, the uterus typically grows to approximately the size of a small melon. It expands significantly throughout gestation, accommodating the growing fetus and the amniotic fluid surrounding it. By the end of the third trimester, the uterus usually rises to the level of the mother's diaphragm or rib cage, causing significant physiological changes and discomfort. This enlargement of the uterus during pregnancy puts pressure on other organs, leading to common discomforts such as frequent urination, back pain, and shortness of breath. Understanding the changes in the uterus size is crucial for healthcare providers monitoring fetal development and ensuring a healthy pregnancy.