<s>[INST] greetingsi hav been experiencing coughs and colds since 2 months ago. been to the doctor twice, yet i see no improvement, except for my phlegm which has been gone for a while now. however, since last thursday, i started coughing out white, foamy/bubbly saliva... i thought it was just just because my throat felt itchy and all... but thrn when i lay on my back i seem to choke, and it scares me. i dunno what to do...  can u suggest ways to treat my condition? my sincerest thanks, aprylle [/INST] Hi, All these symptoms could be because of upper respiratory infection (pharyngitis, laryngitis, epiglottis) or bronchitis or allergic rhinitis or sinusitis. It is mostly due to viral infection like EB virus, adenovirus, but some time could be bacterial or parasitic. You may have some routine blood investigation with sputum tests as you had cough since 2 months and Chest X-ray to get diagnosed first. You may require higher antibiotics (quinolones or accolades) to prevent super infection with anti-inflammatory and other supportive treatment like bronchodilators if there is any breathing problem. It would be advisable to see pulmonologist and state treatment after that. Thanks. </s>