Should I be concerned about a tooth abscess?

See a dentist ASAP. A dental abscess is a collection of pus that forms in your teeth or gums as a result of a bacterial infection. The infection may spread to your jaw, face, eyes, sinus and to other areas of your head and neck. Dentist will treat a tooth abscess by draining it and getting rid of the infection. See a dentist ASAP.
Yes. see dentist asap to have it trated bfore it gets worse and sreads to gums.
Yes. You should be concerned about an abscessed tooth because this is an infection. An untreated infection can cause pain, swelling and can effect your entire body. See a dentist ASAP and get this tooth treated or extracted. Antibiotics alone will not cure this infection.