Hi Sharksfan, it sounds like it could be LPR....also known as Silent reflux....not everyone has heart burn with this, but the lump in the throat, clearing the throat are symptoms....
When there are symptoms, they include:
Sensation of a lump in the throat.
Need to clear the throat.
Sensation of mucous sticking in the throat and/or post-nasal drip.
Red, swollen, or irritated voice box.
Do see your Dr and try a GI Dr to get DX and right course of treatment for you.
Keep us posted with your progress and what you find out.