I was diagnosed with a PE in April and I have Copd, ever since I had the PE I have terrible weekness in my legs. I saw a cardiologist and was told everything is normal, but am scheduled to see an Endocrin doctor shortly. It is very difficult to walk and stairs are even more of a challenge. The PE that I had! I was advised that it was Milan so I don t understand why I m having so much trouble walking. My mother says she has Firbormialga, but I don t think it affects your muscles. Any i site you may have would be greatly appreciated. Thank you