The symptoms you describe are not usual reported in guys taking Zometa. In any case your symptoms could be a cause from interaction with other drugs of your treatment. Hormonal LHRH agonists may cause the effects you listed because it interferes at the pituitary.
Zometa is more related to fatigue and fever. In some cases it causes osteonecrosis of the jaw or tooth problems.
You should report to your doctor immediately the symptoms.
Wishing you find the cause.