Menstruation is normal every month, which means that the endometrium sheds more regularly. Failure to get pregnant may be caused by ovulation disorder or follicular dysplasia, tubal factors, gynecological inflammation and other reasons. 1. Ovulatory disorders or follicular dysplasia: If menstruation is regular and bleeding is normal, it only means that the endometrium is shedding, but it does not determine whether ovulation is occurring or whether the follicles are developing into dominant follicles. If you continue to have regular periods but are not pregnant, ultrasound is recommended to monitor the follicles. 2. Tubal factors: If there is a blockage of the fallopian tube, there may be ovulation but the sperm and egg cells cannot combine, resulting in failure to conceive. 3. Gynecological inflammation: If there is a more serious gynecological inflammation, the higher level of inflammatory factor may lead to the sperm being killed and the fertilized egg can not be formed normally, thus failing to get pregnant. If you persistently fail to get pregnant, it may also be related to male factors, etc. It is recommended that you go to the hospital in time for a systematic examination to clarify the cause of the disease and take reasonable methods of intervention.