L.N.
if the pain is still there that means she didn't do a greta job with clearing your root canal. i have had works on the same root canal over the course of two years. which sucks because that means i have had the crown replaced that many times because once the crown is put in, it will get destroyed if more work need to be done. go back to the same one as the 2nd one will make you pain as if doing this for the first time. go back and say go in and clear the whole thing. do not put the crown until your tooth feels fine
ps there should be NO pain after the root canal has been worked on properly. soreness yes, for a few days but that is it just soreness. good luck