lyphoma???

I have been dealing with this for 3 years now. It started when i had an ultrasound to check the thyroid bed. I had thyriod cancer in 2008. My thyroid was removed and so far so good. So on the ultrasound they seen some enlarged lymph nodes. We watched them then in 6 month one had incressed in size sent me for a FNB. They guy acted like he didn't know what he was doing. he said he wasn't even sure if he got the right one. So those resulte came back negitive. So then a year later same thing enlagred lypmh node on a ultrasound. They end up doing a PET scan. The lymph node light up. The doctor i was going to said it is nothiing to worry about that if it is lymphoma that it is slow growing. So I had another ultrasound 6 months ago and the lymph node had incressed in size and change fatty helium and now there was one on the left side to. So a new ENT end up doing a FNB on the one on the right. They didn't even get what they need to to test it. So had to go back the next week and have another FNB done. The results came back neg. So now las week had another ultrasound done. This one says Bilateral leve1b lymph nodes which are prominent in size with hypoechoic and thickend cortex. So now there is 4 lymph nodes that have incressed in size now on the right side and 2 lymph node on the left side that have incressed in size. All this time for 3 years i have had night sweats, faugtie, just not feeling well. In July 2016 i started lossing weight i lost 3 dress sizes from July to September 2016. I now have stopped losing weight as of now. I just don't know what else to do.. I was thinking about having them to remove a lymph node. Any help would be nice. 

Thank You

Joni