Thanks for posting your query,
One of the most common causes of tooth pain and nausea
is a tooth infection
. This occurs when bacteria is introduced into the tooth. This can occur when your tooth becomes cracked or chipped or when a cavity progresses without treatment. An abscessed tooth frequently causes general feelings of discomfort and the pain might be so significant that it causes you to experience an upset stomach.
Treatment of your tooth pain often depends on how severe the infection is. In some instances, antibiotics are all that is needed to kill bacteria. This should help your pain to subside, but antibiotics also can cause an upset stomach. If the abscess is more serious, pulling the extracted tooth or performing a root canal
to remove the abscess and bacteria may be necessary to alleviate pain and nausea.
I hope this information has been both informative and helpful