In tears

So I've had a swollen tonsil, my neck is swollen and painful, and my ear is killing. I went to doctors and said I think I have tonisilitis, he said it wasn't and has sent me off for blood test and an X-ray, I'm now upset and everything. It might be glandular fever but I've looked on internet and it had said cancer, really upset. Can't stop crying. I'm a smoker too so I do think it is the big C :( x