Had total thryoidectomy last October due to massive goitre. Now on 175mcg Levothyroxine but suffering severe swelling in my legs and feet....from my thighs down. It's pretty sporadic...some days are better than others. Was SUPER bad over Christmas and wondering whether it might be diet related? I'm also feeling pretty low and have gained weight (now have BMI of 33) Have looked into T4 to T3 conversion but not sure about it all. GP says it's my body adjusting after surgery and deling with the extra weight. Just wondering if anyone else has had similar experiences?