Swollen blood vessels in the legs or vulva are common in pregnancy due to the relaxing effect of pregnancy hormones on the vein walls. This can cause blood to pool in the legs and distend the veins.  The veins in your vulva can also swell during pregnancy, since there is generally a lot more blood in your pelvis. You are more likely to suffer from varicosities if other women in your family do. Support hose, exercise, elevating the legs, avoidance of standing or sitting for too long, and taking 80 iu of vitamin E every day can help. If you varicosities of your legs, and have intense pain, swelling, heat, or redness, you should call you care provider to be evaluated for the presence of a blood clot.

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