Swollen Legs and Weight Gain

Dorothy Chen is a 68-year-old female presenting with progressive swelling in both legs and difficulty breathing when lying flat for 2 weeks. Over the past 2 weeks, my ankles and legs have been swelling up. The swelling is in both legs equally up to my knees. I've gained 10 pounds in 2 weeks. Your task is to take a focused history from this patient.