Any Endodontist here? How to find crack?

I have lower jaw pain and mild  swelling for more than one and a half months. Swelling and pain from day 1. No change in swelling. Had sinus infection and took antibiotics. Sinus cleared up. Went to ENT, did Endo and no sinus infection. Went to dentist, told x-rays and it's normal. Did bite test,felt pain and sensitivity on one spot in lower first molar. During cold spray test, I felt soreness in that tooth for 10 to 20 seconds after the spray. Dentist said it might be a tooth fracture /crack and took CBCT scan. Couldn't see anything on cbct scan and said it's unpredictable. Told me to do RCT or extraction. Told me to extract my upper wisdom tooth. Did that last week. Even after a week of extraction,I still feel the same jaw pain under the ear and same swelling. It hurts to touch under the ear and top of the neck is sore and tender too.Whether the crack cause low jaw pain with swelling?How to know if I have a crack or fracture? Whether minor cracks required RCT? Or extraction?pls help