Hi, I'm new here. I usually hang out in Allergies, thyroids and GERD even though I'm pre-diabetic. I was reading your thread and saw that you have swelling ankles... I was suffering with my ankles swelling up, too. I went to the doctor and he tested me for thyroid trouble. He was right... I had subclinical hypothyroidism which causes fluid retention. I'm now on 100mg Synthoid, two 40mg of lasix, and potassium.
I've also been researching thyroid troubles and found out they can affect your blood sugar, too.
Please ask your doctor to check you for thyroid antibodies.