How can pregnancy be achieved when there is infertility of unknown origin?

Antonio Forgiarini, gynaecologist at Next Fertility Valencia, tells us in this video how pregnancy can be achieved when there is infertility of unknown origin:

Normally, I advise to realize in IVF, an in vitro fertilisation. Sometimes, when we have good prognosis couples, young couples without any pathology where everything seems working perfectly, we can have the temptation to do an artificial insemination, but in these cases we really don't know where is the problem so we are not solving the problem. I don't think it helps a lot in these cases. With an invitro fertilisation we can see all the mechanism that can lead to a pregnancy, we can control them, we can see how they work because we are seeing them in the laboratory, so we can know which are the problems and then we how we can solve them.