The possibility of not being pregnant with two bars on the pregnancy test paper is very small. The accuracy of early pregnancy test paper is still high, in the formation of fertilized eggs about 14 days can detect pregnancy, appear two bars do not feel confident can go to the hospital to check the blood HCG serum human chorionic gonadotropin, the accuracy of the test is very high, usually can be a direct diagnosis of whether the pregnancy. Pregnancy is also divided into ectopic pregnancy and intrauterine pregnancy, if the ectopic pregnancy will also appear test paper positive results, then need to carry out ultrasound to make further judgment. False positive rate of early pregnancy test paper is low, the final diagnosis or need to carry out blood HCG laboratory tests, if the patient has a history of menopause, you need to go to the hospital in a timely manner, improve the relevant examination, a clear diagnosis, to avoid accidents.