My mum has been coughing for the last 7 to 9 weeks, she has been to the doctors, chest is clear, swab test showed a virus, has been taking cough mixture and 2 weeks ago she has had a course of antibiotic 'Erthromycin'.
She gets lathegic and is getting weak. Also has lost weight. She sometimes has difficulty to breath and sometimes her heart beat is too fast. She uses ventoline as well but does not help much. Please help me find as what could be wrong with her.