If you are not sure if you are pregnant and your period is not delayed, you can have normal sex, but avoid excessive sex. If you have had sex before but are not sure if you are pregnant and your period is not delayed, you can have normal sex without any adverse effects on your body. If your period is regular, you can go to the hospital for ultrasound examination after 35 days of menopause to determine whether you are pregnant. If you are pregnant, it is generally not recommended to have sex in early pregnancy, especially if it is too intense, it may stimulate uterine contractions, resulting in vaginal bleeding or even the possibility of miscarriage. If pregnancy is not confirmed, you can have normal sex, but you need to avoid excessive sex. If there is a delay in menstruation or nausea or vomiting, you should go to the hospital in time to determine whether you are pregnant.