AF due Tuesday... but what about this?

So I was on a Target run, about to go overseas for a couple weeks. And I thought what the heck, let me take a test before we leave.

My period is due in two days, so I got an early response test. It’s the afternoon, and the line started showing after a minute 🙊

Is this for real? I’ve had two MC in the last year, so I’m simultaneously ecstatic and terrified!!