Period late

I’m only late by 6 days but I had unprotected sex 2 weeks ago and when I logged into my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> that was during my ovulation period, could I be pregnant or am I just off? I have normal periods that last about 5-6 days and my last period was between July 23-27.