Hmmmm... I am on Gen-Cyproterone, a generic form of Androcur, otherwise known as Cyproterone Acetate, at this time.
I am also a person that deals with Fibromyalgia on a daily basis. The Fibromyalgia can often cause me to feel very tense in a physical way (i.e., muscular). I have experienced muscle cramps on a regular basis and also have a problem with sensitivity to cold, especially in the winter months. These are both symptoms of the Fibromyalgia itself, which can also cause headaches and affect sleep patterns, both of which increase the chance of other physical effects being present at the same time.
You might want to see a pain specialist to determine if there is reason to believe that you might have Fibromyalgia or another type of pain disorder.
One thing that I have noticed in my usage of Cyproterone Acetate is that it has a tendency to increase the severity of medical problems which I was already dealing with, often to the point of temporary incapacitation (i.e., a normal headache becomes a full-blown migraine).
I hope that everything is well with you at this time.
Tiffani