Suggest A Remedy For Viral Bronchitis With Yellow Phlegm

hello...i had, i guess viral bronchitis....for a little more then a week now i have been coughing up yellow phlem, more so at the beging, the lost my voice on and off then had yellow phelm w/lil blood and small start of hives.....went to er and chest xray came back clear....gave me a benadrayl pill for the hive and in an hour i had all hives....still now coughing with some yellow and clear mucas...does that mean i still have this infection and is that when the hives will go away when this does? on prednsoine and zyertac...sorry for the misspellins....hives lighten up then come back and voice gets scratchy...please help....