Pregnancy is one of the most exciting phases of your life. You feel like telling the whole world that you are pregnant. But, when is it safe to announce pregnancy? And you feel like telling your friends also. So, when to announce pregnancy on social media? Most couples wait till the end of the first trimester which is around week 13 to tell friends and family about their pregnancy. There are many reasons why people wait to share the good news. But, the most important factor is what makes you comfortable.