I have been experiencing a lot of throat clearing for almost a year and a half, should i be concerned its serious?

LPR : Laryngopharygeal reflux is when a small amount of acid comes up into the throat and irritates it. It is a common cause of dry tickle cough, chronic sore throat, lump in the the throat , post nasal drip, phlegm in the throat, and throat clearing. It responds well to proton pump inhibitor rx. You need to see ent. I doubt anything serious, but get checked.