Swelling or tenderness in the gums near the affected tooth can be a sign of infection or inflammation. A persistent or recurring pimple-like bump on the gum near the tooth can also be a sign of infection indicating a visit to the dental clinic sooner. Don’t ignore these signs as these can become serious issues in future which is why early treatment is needed.
https://www.toothcrafts.com/blog/is-a-root-canal-right-for-you-heres-what-to-know/