It is difficult to diagnosis without seeing it. Certainly you should not be having these symtoms.If the rct was done by the same dentist that put on the crown I would illicit an opinion from an Endodontist to see if the rct is ok. Sometimes there is an accessory canal present that has not been found. As far as the fit of the crown i can not help you there without seeing it. If the gum bleeds then there is inflammation around the crown and that has to be corrected.
What can I do? The Dentist says nothing is wrong, but it sure as hell feels like something is wrong! I do remember that he took extra time removing the nerves and there were 4 canals so it took a long time. Will this ever go away?