I'm constantly clearing my throat and sometimes coughing i don't smoke i always feel there is phlegm there?

Check up recently?: Common things being the most common, have you have as recent cold or cough? If so you may still be getting over it. Also, do you notice that you sneeze a lot? The phlegm could be related to allergies. Finally, have you ever been diagnosed with heartburn or GERD -Gastroesophageal reflux disease? Any of these could cause your symptoms and may need further information to get a better idea and help.