Lately I've seen some pregnant women that seem like they've swollen up, so much I barely recognize them anymore. What is this? Is it just weight gain?

Pregnancy changes. Pregnancy is a transforming experience. The whole body changes under its hormonal influence. Water retention may vary in women. This retention can be intensified by the intake of dietary sodium, lack of sleep and protein intake. The effects of these "physiologic" events range from barely visible to a virtual metamorphosis!