have a slightly swollen ankles, basically below the heel bone, had blood tests, urine test and TSH. everything is normal. it swelling goes down when i keep the legs elevated for about 2 hours. and in the morning it goes away. I sit for about 9 hours per day, but i take 2,3 min break every half and hour to get up from the seat. Can this be a serious issue? My GP ask me not to worry as there is nothing wrong with the test results.