Right lower leg has felt “heavy” , kind of a “full” sensation with mild swelling for longer than 3 months, has NO pitting edema, redness, tenderness or pain localized to a certain area. Causes mild difficulty with ambulation after extended periods of being on my feet or over exertion. No issues with left lower extremity. Primary care doc states size difference could be d/t right side dominance, however that doesn’t explain odd sensation in extremity that used to be intermittent but is continuous now. Wondering what could be the cause? No history of injury