I've been having this problem for a while now and it's driving me NUTS!! It feels like there is a bunch of mucus in the back of my throat. I can't cough it up so I usually just try and swallow it (ew) but it keeps coming back! As far as I know, I am not allergic to anything. I don't have a cold and am not coughing, so I'm assuming this is post nasal drip. If anyone has ever had this, or anything like it, I'd like to hear about your experiences and what I can do to make it go away.