I’ve had something similar and it wasn’t until an endo did a 3d scan did he find something. And I’m not suggesting you go to an endo at this juncture. Based on what mine found I had a tooth pulled and I’m getting an implant. The area is almost entirely healed and I still occasionally get pain. Even though I have no nerves there!
Between my dentest, endo, and perio I could put a good down payment on a new home! A former dentist told me we have thousands of nerves in our face. And you’ve probably heard of referral pain - Pain emanating from one spot but you feel it in another.
So this is my suggestion, and it is only my opinion but if I were in your shoes, unless the pain is excruciating I would drop it for now. If you have a bad root, abscess, or other problem it will rear it’s head in a more obvious and consistent way. Look hard enough and they will find something. I have no doubt my endo saw what he saw, but I don’t think it was the source of my pain.
That’s my two cents. All that being said you may still be more comfortable getting a second opinion. Just don’t rush into some kind of treatment until you see proof that makes sense to you.