Tell him or no

🌻Maddie
So my baby daddy (ex boyfriend) knows that I'm pregnant & what not, we argued about it before & he thinks it's not his, which it is, & I was just wondering should I tell him I had a miscarriage? Cause if he doesn't care about having a baby would he care about a miscarriage? Or just leave it alone & when he asks or says anything to me tell him!?!!?