Under normal circumstances, it is normal for a couple to become pregnant within a year if they have normal sexual intercourse and do not use contraception. If it takes more than a year to get pregnant, it is considered difficult to get pregnant, and infertility or sterility is usually considered. The factors affecting pregnancy are two-fold, not unilateral. Therefore, if you have not been pregnant after marriage, it is necessary for both spouses to undergo treatment together. Men need to check sperm quality and prostate, etc. Women need to check the function of uterus, fallopian tube, cervix and ovaries. At the same time, antibody-related tests, such as anti-sperm antibodies, lupus antibodies, anti-nuclear antibodies, etc., should also be done. In addition, thyroid-related diseases, also need to be checked.