Hi, i'm a 21 year old man quit smoking for around 10 months and i am overweight, not the unhealthiest person ever but not the healthiest either. 

i am horribly scared that i have esophageal cancer and that it has spread to my liver and i'm dying. for the past 9 months i have had a lump in my throat, food getting stuck while i am eating, heartburn and indigestion, pain when swallowing and ear pain, and a visible swelling when i tense my neck. I have spoken to the doctors about this and was sent for a transnasal endoscopy had the procedure done and was told everything was okay. I was very happy and felt a weight lifted off my shoulders, and everything was left as it was,  but as weeks went on my symptoms haven't changed, i get the same symptoms i can't really tell if they are getting gradually worse or not. A couple of months ago i started getting this horrible pain in my top right rib next to my armpit and under my armpit too, i thought i had pulled something but clearly haven't as the pain is still there. 

while i was in the shower a few weeks back i was washing my neck and felt 2 rock hard lymph nodes above my right collar bone. in the supraclavicular region, i googled my symptoms as most people do who are worried and to my suprise it said i most likely have esophageal cancer, the lymph nodes haven't gone down and are still here it has been around 4 weeks now.

so i spoke to my doctor he ran some blood tests (full blood count and others) and my liver function test came back abnormal, he wasn't concerned as the rest were fine and said he will send me for another in late december time.

Does this sound like cancer to anyone here? i've convinced myself i am dying and nothing can be done as it has such a low survival rate, i hate living with this worry all the time and i am so scared to go to the doctors again, and think they probably think i am a hypochondriac. is there any way they could have missed something on the endoscopy?  someone please reach out and tell me their thoughts it would be a giant help and nice to just have  someone to talk to about this, thank you so much .