My feet swell when I've eaten too much salt (salt has iodine in it) which also effects your thyroid.
Just because thyroid test results fall within the so-called "normal" ranges does not mean that is adequate for YOU. The ranges are far too broad. Many of our members report that hypo symptom relief required Free T3 in the upper third of its range and Free T4 around the middle of its range.
Free T3 is the most important because it largely regulates metabolism and many other body functions. Scientific studies have also shown that hypo symptoms correlated best with Free T3, while Free T4 and TSH did not correlate at all. It is especially important to understand about Free T3 because many hypo patients taking T4 meds find that their body does not adequately convert the T4 to T3, resulting in Free T4 levels that are adequate, but Free T3 levels that are too low in the range.
If you will please post all your thyroid related test results, members will be better able to assess the adequacy of your testing and treatment.