I have found that if someone has back problems or a problem with one knee or leg, that sometimes the edema can affect that leg. Also, a cyst on one ovary can cause edema in that leg. Your doppler may end up showing that you do have venous insufficiency in that leg as well. As Karen said, elevation (if possible, above the level of the heart) is important. You can try to elevate the foot of your bed with a firm suitcase under the mattress. TEDS stockings are good too but in this heat, may not be too comfortable. Hope it all works out!