Does tooth fracture lines cause jaw pain

I have lower jaw pain under the ear for last 3 months. I have ear pain, pain under the ear on the lower jaw with mild swelling. I went to ENT to check sinus and ear. No infection in ear and sinus. My pain is inside the ear,under the ear, lower jaw.went to dentist and he said I have tooth fracture on lower first molar and I couldn't feel any pain on that tooth till I go there. The dentist said it's not visible on the xray and it's unpredictable.i had cold test and bite test.That tooth#46 was more sensitive to cold and was lingering after cold spray for 20seconds.felt pain and sensitivity to bite on one spot on that tooth during bite test. Dentist said might be a fracture line and told me to extract as RCT will not be successful. I went to another dentist and he said no fracture. Then after a month,I started having pain on side of the neck along with jaw pain under ear. My side of the neck is swollen mildly. I feel pain on one spot on top side of the head above ear. Is it bcos of crack?