If menstrual irregularities lead to infertility, the first step is to go to the hospital for an endocrine test. Menstrual irregularities generally indicate a dysfunction in ovarian function. At this time, you can go to the hospital for a blood test, which should be done on the second to fifth day of the menstrual period. It is important to fast before the blood test. After the blood test, treatment should be based on the results. Generally, patients with menstrual irregularities experience ovulation disorders or ovarian secretion dysfunction, causing abnormal hormone levels in the body, which are not conducive to egg implantation and development. Therefore, if menstrual irregularities lead to infertility, it is essential to undergo relevant medical examinations at the hospital and then treat based on the findings. Moreover, if you have been trying to conceive for over a year without success, be sure to undergo other infertility tests.