It is more likely that 30 days of IVF transfer without seeing fetal buds and primitive heart tube pulsation will not work, that is, embryonic arrest has occurred. If you have a regular menstrual cycle, a vaginal ultrasound is usually done at 6 weeks of pregnancy, and not only can you see the gestational sac in the uterine cavity, but you can also see the fetal buds and fetal heart tube pulsations. At 30 days after blastocyst transfer, the pregnancy is actually approaching 7 weeks, and under normal circumstances, you should be able to see the fetal buds and heart tube pulsations. However, if you can’t see the buds and heartbeat on the ultrasound now, you should know that the embryo has stopped, that is to say, it’s not working and the IVF transfer has failed. If it is confirmed that the embryo has stopped, this situation needs to terminate the pregnancy, you can do negative pressure suction under the guidance of the doctor.