What’s going on 😩

This is only month #2 for trying for baby #2. I was due for my period yesterday according to my Flo app.

I’ve taken a pregnancy test yesterday and today and they’ve both been negative. The app was right about the exact day I had my period last month. So I’m just confused now.

Am I really late? could I be pregnant? Could my levels not be high enough to detect yet? Is the app wrong this time?

Has anyone had this happen and then get a positive a few days later?