If you can’t find the gestational sac in 40 or 50 days of pregnancy, there is no hope if you used to have more regular menstrual periods, or there may be hope if your period is often delayed. 1. There is no hope: if the menstrual period is usually more regular, such as menstruation in about 30 days, this case of menstruation around the 20th day of implantation, the implantation will begin to grow normally, usually around 35-40 days can see the gestational sac. If there is no gestational sac found in the uterine cavity and HCG is positive, this situation should be alerted to ectopic pregnancy, and should be taken seriously, ectopic pregnancy can not be a normal pregnancy, and this situation is hopeless. 2. Hopeful: If a woman’s menstruation is not particularly regular and often delayed, it will lead to a delay in ovulation, and the time of conception will also be later, this time due to the short duration of the pregnancy, it may also be that the gestational sac has not yet been formed or the gestational sac is relatively small, it is recommended that you relax, and wait for a few days before going to the hospital for examination. After pregnancy, women should follow the doctor’s instructions for regular checkups to monitor the condition of the fetus at any time. If ectopic pregnancy is diagnosed, the pregnancy should be terminated as soon as possible to avoid danger.