I have been feeling nauseous but im still able to eat. ive also had stomach pain. what could be wrong? is it anxiety or something else?

Many possibilities: Ongoing nausea and stomach pain are a problem. Two days of such symptoms might just be a passing stomach virus, but more that a few days means one should see her doctor. Many disorders cause nausea. Examples include stomach problems, liver problems, kidney problems, infections, cancers, medication effects, foods, chemicals, etc... In fertile women, a urine pregnancy test should be done.