A visit to the dentist is necessary as toothache won’t go away on its own.
Most often the nerve of the tooth needs to be removed [root canal filling] because it is inflamed or infected.
Sometimes the tooth can only be removed, if say, it is split down the middle due to biting stresses.
Antibiotics will not solve the problem.
Other causes of toothache are a gum abscess due to gum disease, impacted wisdom tooth, joint or muscle pain and sinusitis.