Chronic sore throat and neck

Hi everyone

I have had s sore throat and neck pain on my left side for 9 months now. I have been to see my GP which they did a full blood count and put me on antibiotics just incase but they didn't help me at all. I have seen a ent specialist and had a camera up my nose 2x and a ct scan and that came back all okay. I still waiting on a camera down my throat to see if that find out what coursing it. I am already on lansoprazole for acid reflux. Just wondering has anyone got advise as what it could be ? As it really getting me down, I'm struggling to do anything at the moment and it just seem to be getting worse than better.

Thanks