Hello friend, I hope you have breast cancer and along with that or secondarily developed lung cancer also. From the history it appears that the collapse of the lung and the diminished activities in the organ produces extra amount of mucus which is constantly brought out by cough. Antibiotics will not be useful because it is not the bacteria that make the problem, it is the general deterioration you have that make you prone to infection if at all it is there. So what is required is to improve your vitality. I am a homoeopath and so my advise is to take Homoeopathic treatment where YOU and not your diseased organs become important for the selection of the remedy. Antibiots may kill the bacteria for some time and is sure to recur because in addition to the lowered vitality, the strong chemo drugs will again weaken the constitution. Therefore approach an expert Homoeopath who can give you relief from the sufferings, not only from the cough which is less important when considering the disease cancer at present active in you. Homoeopathy can save you. My best wishes for a speedy cure through Homoeopathy Dr. C. J. Varghese Homoeopath drcjvarghese@gmail.com