I have had a low grade fever for two weeks with periods of nausea fever reaching 100.8. i am concerned because my temperature is usually low around 97?

Fever x 2 weeks: Fever is not a normal state. Seek medical attention to day in an ER/doctor/urgent care as you need evaluation of the cause of the fever. it can be infection like urine ( though usually that causes so much pain you see a doctor early) , sore throat, lung issue, pelvic issue, H pylori ( stomach bacteria) gallbladder ( again usually severe pain, autoimmune disease or tumor/ lymphoma