I am going in for an endoscopy on the 9th, I think I have acid f\reflux or something to that nature, my throat is sore and I have a white color on the back of my throat, looks like phlem, but I'm not sure. I have only had symptoms since July and I am worried I have cancer. My tooth is also hurting the last few days.........does this sound like acid reflux, gerd, cancer. I smoke occasionally and drink socially. I am 55 and am scared to death that I have cancer........?