Hello. As mentioned by your doctor already, most common cause of heel or ankle pain, is due to Plantar Fascitis, treatment for which is use of soft sole shoes/chappals. Avoid walking barefoot, even in indoors. You can use hot/cold compress over your ankle for relief from pain. Ankle pain may also be due to elevated uric acid or vid D deficiency. Please check serum Uric acid and Vit D levels and consult any rheumatologist or orthopedician for opinion. Hope this helps.