Hi and welcome to HCM.
You cant cure it quickly,there is no magic medicine. It seems like there is thorat inflammation which can be caused by infection, irritation, gastric acid
or some uncommon causes. If you are a singer then this can be due to too much voice usuing and you should rest with your local chords,it means not to sing, not to speak loodly. Continue with antiacid medicines and do throat smear to rule out infection.
Drink wrm teas with honey or take some propolis
supplements. I am sure it will be better after 3-4 days. WIsh you good health.