After the egg-breaking injection in general after 12-24h can have intercourse, because the egg-breaking injection can elevate the luteinizing hormone, so that the luteinizing hormone peak, the follicle in the role of this hormone will be ovulation, in the injection after 24-36h within the follicle will be discharged, so after 12h coitus has the possibility of pregnancy. Because the sperm survival time is relatively large, usually in 2-3 days can be pregnant, you can appropriately increase the number of coitus, wait until 24h after ovulation can be coitus again.