Hi, my question today is about my wife and i we try to have a baby since 3years now but unsuccesfully, do you have any advise on what to do ?

Fertilty expert: If you have real concern would see a fertility expert who can test both of you to see if there is a problem.

See a specialist: Most fertility specialist will not see a couple who is trying to conceive until they have been having unprotected sex for at least 1 year. You seem to have been at it for longer than that and you might benefit from seeing a specialist who can help identify the source of the difficulty you and your wife are having in conceiving.