Hi Chanmc21

None of us are medically qualified to make any sort of diagnosis here but, and only my view, I would doubt tonsil cancer symptoms would last for 3 years and would be picked up at some point before then.
I was diagnosed with tonsil cancer last year, dont smoke and had lump in neck and red/enlarged tonsil for mths before eventually diagnosed.
Best advice I can give you is to take baby steps and wait and see what the tests show as it will not automatically be cancer just because you are referred to have checked.
Lets hope its restricted to tonsil/adenoid removal and take it from there. I had my tonsil out and you will need to concentrate on that recovery first as it can be a little challenging.
I did start a thread called Radiotherapy for Throat Cancer and you will find plent of support and help there from many. 
I have also kept a blog but dont feel its appropriate to share with you are a little clearer on your situation.
I know its hard, but try and stay as positive as you can and wait on test results. Your age is a good factor in your favour.

Let me know if I can help in any way or id you have any other questions and STAY OFF google.

kind regards
Ian

Thanks so much 

Just found a massive growth at the back side of my tongue same side as the tonsil :( 

Thank you so much 

Just found a massive growth on the back side of my tongue. Same side as my tonsil :( 

Hi there

again, I'm sorry to hear that and obviosuly causing you further agnst.
I would suggest you go back to your medical support team and have a chat with them considering you were seen by a specialist last week and anything of concern would or should have been outlined at the appointment. There are guidelines on how long the pathway should be so I would be pushing to see when the tests you mentioned will be done

regards
Ian