hey dont worry!!! those pregnancy tests are not always accurate it happened to my sis and in the end she wasnt pregnant at all so dont worrry as long as u did a blood test and it came negative then ur safe lol am a nurse and im scared like hel to lose my virginity cz of the pain hahah
If you are on certain medications you may get a false positive. Have you had unprotected sex in the past 4 weeks? If not then I would trust the blood test, which is far more accurate than a urine factory pregnancy test.