What is considered the “safe zone”?

I will be 12 weeks tomorrow and have seen the baby moving on the scan 2 days ago. What is considered the safe zone or when the miscarriage rate is lower? Is it once you hit 12 weeks or after you complete the 12th week? I see such different responses online and Im wondering when I can finally breathe a little 😅

I know you can technically miscarry at any time but just wondering when the chances get lower.