Coughing out the sticking substance

After a few days of sweet liquid (medicine they call it), the virus reduced to only affecting my bronchitis.
However, it creates some very sticky and annoying substance deep in my throat. It will come out sometimes when I cough. To help me cough it up, my grandaunt turned my upside down and kept patting my back. I was so annoyed but they insisted on doing it. Well, it sure felt better afterwards.