Yes, that would describe the feeling I have. Somedays I have pain in the joints and muscles on my left side. Sometimes I just feel this weird sensation and sometimes it feels normal. Weird is the word. Its almost like a heightened awareness of your arm and leg. I think we are having the same thing. How long did you have your IUD? How long have you had it out? Do you have joint pain or muscle twitching? Do your every get numbness or a weird feeling in your tongue or throat? I feel all these things. I would be interested to know more about how you feel.