Since few weeks(you can say after first dose of vaccination), i have seen that in the right inner cheek theres a swelling of artery which cannot be seen but felt when touched or licked by tongue... i went for physical exam by a dentist but he was saying it's fine it might be your anatomy, but no i am sure this was not there previously. The swelled nerve starts from right end of the lip and goes down to the lower body of the mandible.. (Please check the image for the reference). Please help me why is it happening? Thanks.