Is it permissible to announce the news of a wife's pregnancy immediately, or is it necessary to wait three months before announcing it?

It is permissible to announce pregnancy after knowing about it, and it is not a condition to wait for three months. However, it is advisable to limit the announcement to family and loved ones, to guard against the evil eye and envy; for the Prophet, peace and blessings be upon him, said: "Seek help in achieving your needs by concealment, for everyone who is blessed is envied."