please help, for the last 3 days iv felt a lump at the back of my throat i cant shift, feels like rubbish but it wont go down or come up, i have just got over a cold and cough, but my nose is a little stuffy sometimes still, iv just had a lot of blood work done and nothing showed up, but im terrified its throat cancer! im 27 and do smoke! i dont have a sore throat when i swallow though and food goes down like normal!