The best way to determine if you are pregnant is to use your period. If you are pregnant, you will not have your period. If you have your period after intercourse, you will not be pregnant and you can stop worrying about the chance of pregnancy because your period is the best representative. In the future, it is important to use condoms as much as possible to avoid the chance of unwanted pregnancy, because ovulation can change according to the environmental stress and mental factors of each person. Some people ovulate 2-3 days after their period, some in the middle of the period, and some before their period, so it is important to use condoms for safety reasons. If you have an unplanned pregnancy, you need to terminate the pregnancy, which is a big damage to the uterus, and you need to pay attention to the hygiene of both parties when having intercourse, so that there is no chance of cross-infection, as it can lead to vaginitis.