I don’t think I’m pregnant but I’m scared.

I know it probably sounds dumb , but I’m three days late and I haven’t been late to start before.

I’ve only ever had protected sex, and even when we do he always pulls out before he finishes just Incase even though he has on a condom. He always takes a shower immediately afterwards too just because. I know there probably is a 0% chance but I’m frightened. I’ve been pregnant before with a previous relationship but I lost the baby at 11 weeks at a miscarriage. That was over a year ago and I’m not ready to be pregnant at this point in my life so I’ve always made sure to be EXTREMELY careful. But I’m still late...