Whether the panties are clean or not has nothing to do with the presence or absence of pregnancy. Clean panties cannot mean no pregnancy because not all pregnant women will have increased discharge after pregnancy. To determine if you are pregnant, it depends mainly on your menstruation. If you are normally pregnant your menstruation will be delayed, if a woman with normal menstruation has her menstruation delayed for more than 3-5 days, you need to consider being pregnant. There are many ways to determine pregnancy, one of the most common is to use the early pregnancy test paper, if the early pregnancy test paper is two lines, it is positive to indicate pregnancy. In addition, blood can be drawn for chorionic gonadotropin, which is also very accurate.