Chance of pregnancy or period just late

Good night guys how you doing I have questions I had sex July 13 unprotected but my nigga pull out he go went back in. We been doing that a lot little but my period always come on.

This month 21th & 26th instead of pulling out he cum inside of me Both days period apps telling me my period late. Is there chance of me getting pregnant. 21-26th I was not ovulating

Btw last time saw my period was July 28th -August 2nd