Injections of low molecular heparin may not necessarily lead to successful fertilization of the fertilized egg, but because heparin can improve blood circulation to the site of uterine implantation, it can appropriately increase the rate of embryo implantation in some people. Heparin is an anticoagulant drug and is usually injected in early pregnancy to preserve the fetus and promote fertilization of the egg. However, the successful fertilization of the egg is also determined by the quality of the sperm, the quality of the egg, the quality of the fertilized egg and the environment in the uterine cavity, so it may not necessarily result in successful fertilization. Injection of low molecular heparin for fertility preservation is mainly used only for some patients with embryonic abortion, recurrent miscarriage, and abnormal coagulation function, and the injection can improve the blood supply to the embryo implantation site, thus increasing the success rate of embryo implantation. However, if the patient is using heparin prophylactically, it may be risky and may not only lead to failure of conception, but also lead to heavy vaginal bleeding due to the effect of heparin when coming to menstruation, and in serious cases, shock and other symptoms may occur. If you want to conceive quickly, you can choose to have intercourse during ovulation to increase the success rate of conception if both spouses are physically and mentally healthy. During the preparation period, smoking and alcohol consumption should be prohibited, and physical exercise should be increased to enhance physical fitness and improve the quality of eggs and sperm to prepare for the fertilization of the egg. Women can also elevate their hips after intercourse to prevent semen from flowing out to increase the probability of conception.