Nipples hurt, upper stomach is hard, been nauseaed, peeing like crazy, can't lay on stomach and been off of birth control for 3 week?

Consider pregnancy.: I suggest you get a urine test for infection as well as a urine pregnancy test.

Exclude pregnancy: You may be experiencing symptoms associated with oncoming menses. However, you should do a pregnancy test to exclude a current pregnancy as these could be symptoms of pregnancy. If your test is negative and your symptoms persists you should see your doctor for an evaluation.