Pregnant and don’t know how to tell him

Hi everyone.

I’m 5 days late and i’m NEVER late. So turned out i’m pregnant. Now the guy i had sex with is my FORMER boyfriend. We are not together anymore but there are feelings and sometimes when we chill.. well things happen. Now i did take a plan b, but i think i clearly already ovulated. And now this happend. I’m so scared to tell him, I’m panicking. Please i need tips! We are 23 & 25 and strict religious parents.