Gagging up Mucous

Hi RG and all,

Sorry for the lovely post title but that is exactly what is happening to me. A few times a day I will suddenly start not coughing but instead heaving and up comes (from my stomach no less) thick mucous.

Any idea which parasite may be causing this?

Many thanks,

Alison

P.S. It's not the "roundworm cough". I have this also where I couch up stuff from my lungs but this is coming up from my stomach.