During the preparation for pregnancy, if there is a higher possibility of pregnancy after intercourse, it is usually not recommended to have intercourse again after that, if it is confirmed that there is no pregnancy, you can have intercourse again.
During the preparation for pregnancy, it is usually necessary to have sex at the time of ovulation, when the likelihood of pregnancy is higher.
If you are pregnant and then have sex again, it may affect the combination of fertilized eggs, or cause bacterial and other microbial infections, resulting in fertilized eggs can not be normal, easy to cause ectopic pregnancy or pregnancy failure, so try not to have sex again after the preparation for pregnancy.
If you do not find a pregnancy within half a month after having intercourse during the preparation period, and the blood HCG level has not changed, it means that the preparation has failed, and it is possible to have intercourse again at this time.
During the preparation for pregnancy, women should pay attention to observe whether they are pregnant or not, you can use the pregnancy test paper to determine the time 7 days after the delay of menstruation, you can also go to the hospital for medical treatment, blood test, clear whether the pregnancy or not, you can also ultrasound examination, to determine whether it is intrauterine pregnancy.