Menstruation just to time, the use of early pregnancy test paper to test, test born a deep and light may be pregnant, but may also be due to disease factors, test paper factors and other factors resulting in false positive. 1. pregnancy: menstruation just arrived, due to just pregnant body human chorionic gonadotropin level is relatively low, the use of early pregnancy test paper for testing, there may be a deep and light phenomenon, a weak positive. 2. not pregnant: because some women in the test, the use of early pregnancy test paper expired or is stored in the process of damage, may lead to contamination, in the examination of the phenomenon of weak positive, manifested as a deep and light. In addition, some women suffer from trophoblastic tumors, ovarian tumors and other diseases, may also lead to the use of early pregnancy test paper test appears deep and light, a weak positive phenomenon. It is advisable to re-test with morning urine a few days after the test, or go to the hospital for a blood test for human chorionic gonadotropin to determine whether you are pregnant or not.