During pregnancy, the body produces approximately 50% more blood and body fluids to meet the needs of the developing baby. Swelling is a normal part of pregnancy that is caused by this additional blood and fluid. Normal swelling, which is also called edema, is experienced in the hands, face, legs, ankles, and especially feet. This extra retention of fluid is needed to soften the body, which enables it to expand as the baby develops. Extra fluid also helps prepare the pelvic joints and tissues to open to allow the baby to be born. The extra fluids account for approximately 25% of the weight women gain during pregnancy. Swelling may be experienced at any point during pregnancy, but it tends to be noticed around the fifth month and can increase while you are in the third trimester. The following factors may also affect swelling: -Summertime heat -Standing for long periods of time -"Long" days of activity -Diet low in potassium -High level of caffeine consumption ...