I constantly have clear phlegm in my throat and have to clear my throat all the time.  I can be talking and suddenly my voice is muffled and I need to clear my throat a few times - it's embarrassing!  When I went in about 5 years ago about this, my GP sent me to a specialist.  The specialist put me on Priolsec OTC for acid reflux even though I do not have any heartburn or other symptoms of GERD.  He kept changing the doses and what time of day I should take it and even added an additional acid reducer also but my symptoms didn't go away.  I stopped taking the meds after many doctor visits and I have just been living with this ever since. 

The last few years, I have become prone to sinus infections after a cold and my GP has told me to use the NetiPot everyday.  If I get sinus headaches or think I have an infection he suggests using Clariton and increase the NetiPot to 3 times a day until the symptoms go away (he won't prescribe antibiotics anymore).  I have never been diagnosed with allergies or asthma - just sinus issues after seasonal colds and occasional sinus pressure.   Could the constant phlegm and muffled voice be something due to my sinus issues rather then acid reflux?