Few years after tonsil removal..

Hi all. When i was 22 i had my tonsils and adenoids removed. Which was in 2011. Ever since then i've been feeling what feels like mucus in the back of my throat when i swallow. not sure if its normal or not, ive brought it up to my doctor numerous times and she doesnt say anything about it. Is there a way to get rid of the mucusy thing? Its starting to really get on my nerves

may be post nasal drip