The fact that the fertilized egg has just been implanted does not allow coitus, which can easily lead to vaginal bleeding, abdominal pain and miscarriage. It takes about 10 days for the male sperm to enter the female fallopian tube, combine with the egg to form a fertilized egg and settle in the uterus after intercourse, which is very unstable because the fertilized egg has just settled in the uterus. You can’t exercise strenuously or have intercourse, or else the stimulation will cause vaginal bleeding, abdominal pain and miscarriage. The first time a person is in a situation where he or she can’t have sex, he or she can’t have sex in the early stages of pregnancy or in the late stages of pregnancy, which can easily lead to miscarriage, and in the late stages of pregnancy, which can easily lead to the occurrence of preterm labor. Can be appropriate in the mid-pregnancy coitus, pregnancy should pay attention to a good life care, do not do on the development of the fetus is not favorable things, do not eat cold stimulating food, and regularly do a good job of maternity examination.