Can a virgin girl become pregnant without rupturing her hymen, in the event of a delayed menstrual period, after an (illicit) encounter with her fiancé?

One must hasten to sincere repentance from adultery, for it is a grave offense and a major sin.

As for pregnancy occurring despite the presence of an intact hymen, it is possible if there is a small opening in it allowing for the entry of semen. The delay in the menstrual cycle could also be due to another reason.

One must be cautious against complacency regarding impermissible conversations or seclusion between fiancés, for the fiancée is considered a stranger to the fiancé until the legal marriage contract is concluded. It is not permissible for him to speak with her beyond what is allowed by Islamic law, and phone calls between them often involve desire or pleasure that is not permissible before the contract.