The common methods for pregnant women to detect whether they are pregnant by themselves include: 1. Early pregnancy reaction is presumed based on the history of sexual life and menstruation. If you have a normal sex life, regular menstruation, and your period is delayed for a week, and you have early pregnancy reactions such as nausea, vomiting and change of appetite, the possibility of pregnancy is very high. 2. You can use early pregnancy test strips to detect whether you are pregnant or not. The accuracy of the test results can be improved by using the test strips in strict accordance with the instructions.3. You can determine whether you are pregnant by monitoring your basal body temperature.