Left sided swollen tonsil & tongue

Hi. I had EBV around 20 years ago and around 7 years ago had a constant sore throat for around 4 months. ENT specialist & MRI were inconclusive and it eventually got better. I am now having another episode. Sore throat for 5 weeks plus and feeling exhausted with lymph node aches all over. I went to see the ENT specialist again two days ago and had a camera down my throat. He said my tonsils were asymmetric, one tonsil was enlarged along with the base of my tongue. He said he couldn’t see anything else significant. He is sending me for another MRI.
I mentioned having EBV in the past but he didn’t acknowledge it (I’m not sure many doctors think flare ups are a thing)
Do you think this is a flare up or is it something else? I appreciate you’re not doctors lol, but any experiences etc would be helpful. Thanks