70 days pregnant embryo development is abnormal what is the reason

If the embryo develops slowly, it is likely that the hormone level is low and the endometrium is not thick enough. You can use progesterone drugs according to the doctor's advice. If the gestational sac shape is abnormal, it is likely to be caused by chromosomal abnormalities, which are related to chromosomal abnormalities of both men and women. It is necessary to terminate the pregnancy in time.