To solve a problem you must first identify it.
It is therefore important to know that there are several factors that affect both, women and men, from who it can be explained sterility; in the case of an heterosexual couple It is important to take into account, for example, that the quantity and quality of the ovules of women falls after or 35 years old, but must also be clear that the concentration and mobility of sperm is reduced with age.
The sterility in a couple may have its origin in women, in men or both.
The absence of ovulation or the irregularity of it, endometriosis, blocked tubes or problems in the uterus may be behind the female sterility. The scarce amount of sperm or its absence, as well as, its little mobility or abnormal appearance, early or retrograde ejaculation or impotence may be, in the other hand, reason of sterility in men.
If you don’t get pregnant after at least 12 months trying, look for professional help to determine the origin of sterility and, propose a treatment to overcome it.