Been on Anastrozole almost 1 year. after mastectomy for grade 1 cancer..had previous mastectomy for fibro cystic breast 40 years ago! Since starting medication I developed cough with mucous(clear production) and have become gradually more on 2 inhalers but getting worse.Chest Xrays clear.Also problems with joint pain/stiffness... can cope with joints but need to breathe!! any suggestions please..can I stop Anistrozole ..just to see if breathing improves?