The absence of fetal heartbeat and fetal bud at 54 days of pregnancy is not a cause for concern. It may be due to a long menstrual cycle or regular delayed menstruation, which leads to late ovulation and late formation of fertilized eggs. Don’t worry too much if you can’t check the fetal heartbeat and germ on day 54 during ultrasound, you can go back in a week to check again. If you are too nervous, it will easily stimulate the uterus and cause contractions, which will increase the chance of miscarriage. If the fetal heartbeat and fetal bud are not detected at 60 days, you need to pay attention to the size of the gestational sac, if the elasticity of the gestational sac has decreased or the gestational sac has shrunk, it may lead to biochemical pregnancy, but if the gestational sac is well developed, you can continue to observe.