i also had tongue swelling twice with mirena. i have been tested for allergies to the silicone and polythene that it is mad of and turns out i am NOT allergic, so strange these symptoms are happening!
also check your silicone levels in your blood, mine are dropping very very slowly post mirena, and i am only post 2 months, and i been blood tested for antibodies and antigens build up in blood work, treated with a steroid for 7 days, even if your not allergic to silicone you can have negative reactions going on inside your boday,
woman with muscular and joint pain should also go to a hormone specialist, and get there progesterone levels checked! post mirena sufferers the synthetic hormone can take over the natural producing hormone and can cause many diseases with nervous system and pain! it can only go away if you get it treated! some people have very low levels of progesterone!!!