A pregnancy test that shows two bars is pregnant in most cases, but it is not completely certain that you are pregnant. A pregnancy test is a type of early pregnancy test that detects human chorionic gonadotropin (HCG) in a woman’s urine to determine if she is pregnant. If the pregnancy test shows two bars, it means conception. However, some diseases, such as bronchial cancer, breast cancer, pancreatic cancer, stomach cancer, liver cancer, lung cancer, kidney cancer and other related diseases, also secrete human chorionic gonadotropin (HCG), which will also be detected positively if the woman does not conceive when tested by a pregnancy test. When two bars are detected by a pregnancy test, the first thing to consider is that it is an early pregnancy reaction. If early pregnancy is ruled out, it is recommended to go to the local hospital for blood tests, ultrasound or other necessary programs to clarify the cause.