When a couple has been looking for a baby for a long time and it doesn't come, it's best to visit a fertility specialist. He will be in charge of requesting different medical tests. Depending on the results obtained, the doctor will recommend one fertility treatment and another.
For example, in the mildest cases of infertility, artificial insemination (AI) may be the solution to the problem.
On other occasions, it is necessary to resort to In Vitro Fertilization (IVF) to achieve a gestation and even surrogacy due to a uterine incapacity in the woman to carry the pregnancy to term. However, it is important to know that surrogacy is not allowed in Spain, so it will be necessary to decide a destination in the country where the legislation of the country allows it.
Finally, the use of complementary techniques such as preimplantation genetic diagnosis (PGD) can help improve the success of assisted reproduction treatment.