Diagnosing base of tongue cancer: pain in throat

Hi there 

Was hoping to hear from anyone who had base of tongue cancer with pain in throat as the primary symptom and had trouble being diagnosed (only 30% of people present with a sore throat I've read).

I have had a pain on the left side down my throat since Nov 16. Sometimes it's like a sharp pinch sometimes like a throbbing. More recently my left back teeth and gums ache and my left tongue hurts when eating. Sometimes pain swallowing. Left neck nodes slightly swollen but not hard or unmovable.

Scope showed swollen left lingual tonsil. Pet / ct half body showed nothing

Neck ultrasound and Fna showed a couple of reactive lymph nodes but shape was not deemed concerning and needle aspiration was negative.

Left sided lingual and palatine tonsil biopsy negative. Unfortunately biopsies were not taken from other locations of oropharynx. Thought that was the end of it. Then all my symptoms came back. Light throbbing pain on left of neck too. ENT keeps saying it's just post tonsillectomy but the pain is totally different and it's just getting worse.