Weight loss without trying often does indicate an underlying health problem. You need to see your doctor and get tested for possible causes, also for the edema. You could have a thyroid problem such as an overactive thyroid. You could have intestinal parasites. You could even have cancer. Whenever I have a patient losing weight like this, especially if there are other problems going on like edema, then I do an examination and testing to figure out the cause. Get an appointment with your doctor and start an evaluation to find out why you re losing so much weight. Hope this helps.