My tooth is hurting and making me nauseous and it is hurting on just one side of my face?

Most. Most common cause of tooth pain is infection (abscess). Infection can spread rapidly to other organ systems and quickly get out of control. Resolution requires specific Dental treatment, often with antibiotic coverage. Pills alone won't fix this. See Dentist ASAP.
Please seek. prompt dental assessment. When you call for appointment advise of level of pain and if there is any associated swelling.
Nerve problem. Sounds like deep decay or fractured tooth. Advise dental visit to xray and evaluate if tooth can be saved or should be removed.
Question ? No question asked, but if you are wondering what to do, you should see a dentist to have that tooth examined ASAP.