Pregnancy announcement on social media. When did you announce your pregnancy? And why?

Meron akong mga pang-post na picture ng ultrasound with baby clothes pero hindi ko padin mahanap right time to announce it sa social media kasi madaming Marites. 😅 Hindi pa kasi kami kasal ng bf ko. Pero ok din naman to keep it private muna mas nakaka hinga kahit papano walang mga tanong tanong. :)