My mother age is 56 and for last 9 days she has dry cough . Coughing is more in nyt compare to daytime and in night her nasal blocks . Yesterday night she had choked throat and nasal were blocked and minor blood with coughing initially after that only thin mucus is coming. Presently coughing is same in morning as night and thin mucus with coughing is coming both nasal blocked please suggest what to do