Morning everyone :)

mid December I went to my GP as I had a lump at the top of my neck just under my jaw on the right side. It had been there since early last year but I put it down to being under the weather and forgot about it. He said he wanted to refer me to ENT, have an appointment tomorrow at the hospital. I have a few symptoms that I don’t know if they could be related but I was wondering where any one had lumps in their neck and what their symptoms and diagnosis was? I’m panicking a little that it may be lymphoma, so getting as much info on it as possible is my way of kinda of preparing myself and feeling calmer! 
thanks in advance.