Thick or thin endometrium is not conducive to the implantation of the pregnant egg. Due to the influence of hormones, the endometrium and follicular development are synchronized, and often the endometrium is around 0.8cm at the time of ovulation, which is most suitable for the implantation of the pregnant egg. A thick endometrial lining affects the rooting of the gestational sac in the endometrial lining, while a thin endometrial lining is not nutritious and does not allow the gestational sac to be well buried in the endometrial lining, and the slightest activity may cause the gestational sac to miscarry. During ovulation monitoring, the ultrasound doctor will monitor the size of the follicle and the thickness of the uterine lining at the same time, so that you can find out whether your body is suitable for pregnancy. If the lining of the uterus is too thin, you can take oral application of Zihechuan, which is very effective.