i am having frequent throat inflamation and sore throat in the morning,tiny ball of flum comes in the morning through mouth only and voice is coarse, my doctor says it is sinus, if i take cetrizet i feel drowsy in the morning, i have already undergone. nasal surgery (septro plasty) can i use nasal spray regularry will it have any side effet, what will be the best treatment. i have tried saline gargle