HELLO, I'LL TRY ASKING MYQUESTION ON HERE. I'M TYPING IN

HELLO, I'LL TRY ASKING MYQUESTION ON HERE. I'M TYPING IN THE DARK, SO HANG WITH ME HERE. I HAVE A TOOTH THAT HAD A ROOT CANAL DONE ON IT, IT QUICKLY SHOWED THE TOOTH WAS STILL HAVING PAIN IN THE TOOTH, SO I RETURNED TO THE DENTIST AND HE CHECKED THE SAME TOOTH OVER AGAIN, WENT INSIDE DID MORE SCRAPING/CLEANING, AND THOUGHT THAT MIGHT DO THE TRICK. THE TOOTH IS STILL HAVING AND GIVING ME PROBLEMS WITH SORENESS, TENDERNESS AND PAIN. NOW MY GUMS AND JAW LINE ARE ALSO SHOWING DISTRESS WHICH I BELIEVE IS COMING FROM THIS VERY SAME TOOTH. DO I RETURN TO A DIFFERENT ROOT CANAL SPECIALIST TO FIRST FIND OUT IF THE TOOTH HAS BEEN ACTUALLY AND COMPLETELY CLEANED AS IT SHOULD HAVE BEEN, OR DO I FORGET ABOUT THIS TOOTH AND HAVE IT PULLED...?? I HATE LOSING THE TOOTH. bUT WHAT ARE MY OPTIONS HERE..?? pLEASE HELP ME BY GIVING ME YOUR EXPERT THOUGHTS ON THE SUBJECT.