Possible cancer diagnosis. Need help!

Hello. I am a new member here. I am yet to be diagnosed with cancer but fear that I may be in the very early stages of it. I am looking for help/advice on what to do, as my primary care and ENT have basically said they won't see me to discuss my cancer-esque symptoms anymore. 

For the past 8 weeks I've had pretty much the same symptoms. I am early 30s, and a little overweight. 

The first symptom I had was a very dry throat that lasted about two weeks. Not a typical dry throat though. On a scale of 1-10 it was a 10. I was drinking nothing but soup and tea day in and day out. I found some momentary relief from this but generally the throat remained dry. (No fever, no cough, no other symptoms)

The next week or so is when my neck pain really began getting worse. Swallowing began hurting. I would wake up barely able to move my tongue! I noticed a white spot on the inside of my cheeck too near my tonsil. I also felt my tonsil getting hard and when I pushed on it what looked like white/yellow puss would come out. (Still no fever, no cough, no other real symptoms. Throat still dry near the back and uvula)

The next week or so is when ear pain started. It was also tough to swallow at this point. Then the back of my throat felt like it was pulsating and it looked discolored with some red spots. The pain eventually made it all the way to my lower neck region, which was throbbing a lot! My thyroid/Adam's apple area was very painful.

I finally was able to get into my primary care. I was prescribed 10 days of penicillin.

Took the penicillin but to no avail. Still dry throat, difficulty swallowing, etc. I went to the ENT. He felt my neck (no bumps or anything other than a "fatty tissue" that he said was benign on the back side of my lower neck). Then he looked in my throat with a light. He said the left tonsil was slightly larger than my other one (which it was for several weeks) but that it wasn't concerning.I told him I am in agony and it feels like there is something stuck in my throat when I swallow and that my throat just doesnt feel right! He dismissed me and said to relax.

Well, I couldn't relax. (I used chewing tobacco and smoked ciagrettes from about 18 until late 20s. I quit several years ago but about 2 months ago had a tin and a pack of cigarettes. I am fearful that doing that trigged something). I had him scope my throat through my nose. He looked at my vocal cords and said I am "fine."

That diagnosis (which was about 2 weeks ago) relaxed me a little but the pain I've been having hasn't gone away. I also had a little "blood" spot/blister on the back of my throat. The ENT saw it too but said it was normal and likely just a result of the veins in my throat being so tender, or something. It has since gone away.

I went back to my primary care last week for a follow up to seek answers but he also dismissed me saying I should just relax and that the pain will pass in time.

Well, it's week 8 and I am going crazy not knowing what is wrong with me. Again, I dont have a fever, I dont get chills, but my throat feels like it is on fire sometimes, especially after eating. I havent touched alcohol since these symptoms began. My left tonsil definitly is harder than my right one, and my Adam's apple region feels wierd. About a week ago I  pushed super hard on my left tonsil. More puss, to my surprise, came out! 

Swallowing doesn't cause as much pain as it used to but my neck feels like there is something in it at all times. My lower neck muscles feel tender as well.

I've felt around my neck and there are no real bumps or enlarged lymph nodes, other than a small one under my left side jaw area that feesl like a pea. The other side of my neck doesn't have this. Both my primary and the ENT said the bump was normal.

I don't know what else to do. I've never had a sore throat/neck pain for this long. I dont want it to be early signs of cancer due to tobacco. What should I do? I'm going crazy drinking tea and soup every day. Should I push for blood work? A CT Scan/PET Scan? I am very new to all this.

I've diangosed myself as having a strange case of viral tonsilitis, but am not firm in that diagnosis at all.

As a final note: in the past several years, whenever I would use chewing tobacco, my body would take about a day or two to recover. My neck would be sore for about 24-hours. Well, all of these symptoms I am having started just days after I had a chew and smoked a cigarette. I've stopped since then, and don't want to ever use tobacco again. 

Any advice would be most appreciated. My primary has said he basically will not see me if I come to him with this pain again. I am at my wits end!