Hi everyone

I am a 34 year old female, i have had this mass on the left side of my neck, closer to my head than base of the neck for 8 years, the doctor back then requested an ultrasound which showed it looked normal. Since May I've been having night sweats, insomnia, and the mass has grown, I've also noticed two more swollen lymph nodes on the right side of my neck just slightly above the collar bone, been to the GP in July because i started to experience stiffness in my neck. The GP referred me urgently, three weeks later I was seen by the ENT doctors and they requested an ultrasound which revealed multiple swollen lymph nodes with cystic degeneration and my thyroid showed heterogeneous texture, the radiologist opted not to do FNA at the time to run further tests first to rule out things like TB and SLE. I've had multiple tests so I don't have any infection, no thyroid problem including the autoimmune diseases, I am waiting for them to arrange FNA, I am terrified it's been torturing me mentally for weeks, everytime I google cystic degeneration i see cancer, could it have been misdiagnosed years ago when i first had the ultrasound? 

Has anyone had something similar please share

Thank you