First of all i'll say that I'm 20 years old and have smoked pot for about 5 years, id say the past 2 years on a daily basis. For about a month i've noticed a lump in my throat on my right gland (almost like a swollen gland that wont go away) and only on my right side. It only hurts when i force a swallow or a yawn. The pain when i yawn is almost a tearing sensation. Also i notice when i try to "dig" for spit from the back of my throat that my spit has some red phlegm or something similar in it, otherwize my spit is colorless. I don't have a cough or any other symptoms besides the ones previously mentioned. I've gone to the doctor about it and was prescribed a anti-biotic that did nothing. Is this cancer or possibly something else?