I agree with Dr. Anita..... The anithistamine i refer is phenylephrine or any of its commercial combinations for 7 days(0-0-1) and use a saline nasal drop or otrivin.....!!!! for 5 days(3 drops-3 drops-3 drops) and if its still like that then visit the nearest ENT for examination.
Hello and hope you are doing well.
Your symptoms could be due to a post nasal drip, which can cause a chronic irritation in the throat. This could be due to a sinus infection, a cold or a chronic allergy. It could be sinusitis, if it is accompanied by nasal stuffiness and facial pain or pressure. Post nasal drip could also be due to allergens. You will need to consult your primary care physician for proper clinical assessment. In the meantime for relief from your symptoms you could do warm salt gargles and take OTC antihistamines.
Hope this helped and do keep us posted.