I'm new and worried

Hi, I'm a 30 year old female. My uncle died of throat cancer when he was 38 and  when I was just  8 years old myself. 

I started having throat and neck pain a month ago but it really goes back to the start of the year I believe where I thought I had a sinus infection. It took two months to go away except it never fully went. My nose is always blocked or running since. Before that I hardly ever used to blow my nose now I do multiple times a day. It's like I have a constant cold but without all the symptoms.

Anyway start march I started getting the neck and throat pains. Turning into terrible discomfort and especially when I swallow. 

I have a lump at the bottom of my neck at the front to the left. Which is where the majority of the pain is but not all of it. I have pain around it too. 

Past 2 weeks I have started to dribble on occasions. Sometimes I get ear ache on that left side. I can not sleep because the pain and discomfort is so terrible. My voice sometimes changes for short periods of times randomly but it doesnt last. 

The pain is causing my neck muscles around the area to tense up which isnt helping at all. 

I first spoke to my doctor over phone  she said it's just neck pain and due to bad posture and not listened to any my symptoms. Said exercise and use heat.

I called back second time different doctor, she said again its muscular pain and rensurence that throat or neck cancer would not cause pain or discomfort swollowing ect. 

She said she would not see me unless I told her I had a 3cm hard  lump because of the virus they wont see anyone. 

I have a lump but I'm worried I'm being a hyprocondract and being over the top because how the doctors responded to me like I was being stupid. She told me people my age dont get throat cancer. But it was my age my uncle first got symptoms then 8 years later died. So that's not true. 

I really dont want to hassle doctors again incase I'm wrong and I look stupid. 

I'm obsessed with looking for videos on how to examine my neck but it's near impossible to know myself. 

I just know I'm in a huge amount of pain and discomfort and my doctor wont see me. 

So that's me. Hi. 

Any help or advice greatly appreciated!!