Period?

Love j

So I’m 4 days late on my period.. having mild cramps but that’s the only period symptom I’m having, my breast normally sore/heavy but it’s not.. I had unprotected sex did the pull out method and I believe it was my ovulation day on July 27th... I took a dollar tree pregnancy test yesterday just to give me clarity but it’s nothing.. what y’all think? I’m not even having the discharge I have before my cycle