How do you stop worrying yourself to death?

I just gave a birth to a baby girl on 7/17/2023. She’s my #8. I had 2- 2nd trimester losses and a blighted ovum. I lost 2 babies before I had her. I just can’t stop being paranoid over possibly losing her from SIDs, or losing her at all. How do you moms stop worrying about things like that?