Misscarige?

Shay❤ • Zayden Isaiah was born on May 25, 2017.💙 Adriyan Daniel King born on November 19, 2019❤😊 👣👨‍👩‍👦‍👦
Does a misscarige always involve bleeding? Like if you have a misscarige does that mean you will bleed, or sometimes does nothing even happen till the doctors says something?? Just curious