What should a young man do about his wife's delayed pregnancy?

A Muslim must strive diligently in supplication (Du'a), for it is among the best acts of worship and a means to achieve needs. Among the supplications for procreation and offspring are:

The supplication of Zakariya (peace be upon him): "My Lord, grant me from Yourself a good offspring. Indeed, You are the Hearer of supplication." and "My Lord, do not leave me alone [without an heir], while you are the best of inheritors."

The supplication of Ibrahim (peace be upon him): "My Lord, grant me [a child] from among the righteous."

The supplication of Yunus (peace be upon him): "There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers."

Frequent seeking of forgiveness (Istighfar), for Allah Almighty says: "And said, 'Ask forgiveness of your Lord. Indeed, He is ever Forgiving. He will send [rain from] the sky upon you in [continual] showers. And give you increase in wealth and children and make for you gardens and make for you rivers.'"

Consulting specialist doctors for both spouses to identify and treat any causes preventing conception.