I am experiencing fatigue, food cravings, bloating or abdominal fullness, low back pain, breast tenderness to touch, dark colored (brown) urine an... i don't know if i'm pregnant i took a test but it's neg. then i got this brown discharge then blood?

Tests are accurate: Today's home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (or when conception might have happened) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early, such as less than 2 weeks after conception.