i have to agree w/jevans....you could have any number of problems (besides just water retention--never had it that bad from anything inckuding a.bomb.s)-none of which are good.
"person with congestive heart failure has a heart that no longer pumps as efficiently as it should. The reduced efficiency of the body's pump can cause the blood, and the water it carries, to build up in the lower extremities, causing edema. A short list of other things that can cause swelling of the legs include liver, kidney or lymphatic disorders, blood clots, insect bites, bacterial infections, malnutrition, allergies, and of course pregnancy."