hi i always have paing in the left side of my throat and chest, my bloods were clear, i am on the waiting list for ent, is there a chance it could be cancer or am i ok in that area as my bloods are 100% normal, i am very worried about this. i have a little lump on the left side of the back of my neck too, could this be related. when i swallow something hot, it hurts going down as well and bits of food come back up in my mouth when i swallow, please advise me. thank you