I had a root canal done after an accident, which broke half of my tooth. When I got it checked after a year because I wanted a new cap, the X-rays revealed that I had developed an infection. So i got a new root canal done this November an I have a zirconium cap. Lately, my teeth have gotten sensitive and I can sometimes feel the blood being pumped in that tooth after running or when my heart beats really fast due to cardio. Nowadays, blood oozes out sometimes from the gum of the treated tooth. Do you think I might have an infection again? Will it be okay if I dont get it treated because I feel no pain? If yes, what treatment should I get done?

p.s. I am from India.