Wierdd feeling in throat?

So im getting over ealry bronchitis,.. doc said i dont have to take the levaquin anymore since my oigh is basically gone,.. BUt he did say to take robbitussin at night and if i get worse to make an appointment to see him asap,,.. Now iv been drinking lots and lots of fluids,.. especally ones like gatorade, orange juice,.. V8.. which contains alot of citri acid,.. and it gave me heartburn.. i feel like i gotta hock up a mucus ball or theres like bread in the back of my thrat,.. Any suggestions how to get it up?// If i continue to force a cough i end up gagging. any sugestions? Its gettin on my last nerve and its makin me paranoid. Also,.. anyone got advice how to gain a low appatite back? the meds i was on bascally made me take the BRAT diet,.. Bananas Rice Apples Toast,.. Anything else light in between,.. My stomach feels as if i could eat a whole steak but my tatse buds are dry,.. Probaly from all the citic Acid.