There are certain time requirements when taking a pregnancy test, it must be taken about 12 days after intercourse for the results to be accurate. If the test is taken after less than 12 days, the result may be negative and may show that there is no pregnancy, and there may be a margin of error. There is no need to wait 12 days for a blood test, and blood HCG tests can be done about 8 days after intercourse. As long as the test results are outside of the normal range, this is when pregnancy is indicated. Therefore, it is important to take a pregnancy test at a certain time, as there is a chance of error if you don’t take it at the right time. If you need to continue the pregnancy, you should pay attention to all the pregnancy tests. If you need to terminate the pregnancy, it is recommended that you have an ultrasound examination at around 42 days to determine intrauterine pregnancy, and then you can have a medication abortion or abortion.