I got a positive urine test at my doctors, and then a negative blood test at the hospital. now bleeding dark brown. help? the positive test was done at my doctors this morning, and then when i knew i was, a few hours later i got cramps in my back and star

The : The urine test was likely a false positive. The blood test is definitive. A quantitative blood test (actual number) would have been more convincing as oppossed to a qualitative blood test (positive or negative). Nonetheless the blood was negative. I believe you were not pregnant. Even if you were having a miscarriage the hormone of pregnancy would have been detected in the blood test. Follow up with your doctor for any further questions or concerns. Take care.