Weird feeling in back of throat

I had a RNY on May 13, 2013 and I think I am doing well but In the past couple of weeks I have developed this funny feeling at the back of my throat. I wake up in the morning and don't experience this but as the day goes on, it feels like I have (gross) a gob of spit that I just can't swallow down. No matter what I eat as the day goes on, it becomes apparent. I go to bed and wake up the next day and it is gone but starts as I eat food during the day. No nausea, no vomiting at all. It feels like I have post nasal drip. Weird and just wanting to know if anyone else has ever experienced this feeling at the back of their throat??????

Thanks for any replies!