Well, they should give you a reason for your symptoms and swelling, tell them if they cannot take you seriously you will complain and seek advice elsewhere. Some Doctors seem to think you make things up. Just because an echo (which I assume they have done to confirm things) looks ok, it doesn't mean there isn't another problem. There are hundreds of medications which can lead to ankle swelling as side effects, and statins in some patients have been shown to produce short term memory problems. What medications are you currently taking?