about 8 weeks ago I came down with what seemed to be a cold but it never got bad, just drainage and cough. then about 2 weeks in it got bad for a day or two then back to just tired, drainage, cough, for another 2 weeks. then got bad again with several days of fever, cough (bad) then it got better and strength came back. problem is I still have the cough. it doesn t seem to be in the chest but in the upper throat, mostly triggered by breathing in and getting a tickle that causes the cough but there still seems to be some mucus way back in the sinuses or someplace. otherwise I feel great. what might it be and how do I get rid of it? thank you