I too am having the tingling in my hands/arms and feet/legs. I have experienced some breathing problems and stomach aches. I just got the Mirena taken out today. Both of my doctors still want me to see a neurologist. They have told me that these are common symptoms for MS. I did have blood work done and it came back fine in terms of any vitamine defiencies. I am hoping it is the Mirena but I will pursue the neurologist just to make sure.