I'm so confused

Yiota
My period was due on the 25th of June my last period ended on the 30th of May and my ovulation changed and it says I was ovulating from the 22 to the 28th Ive had sex nearly everyday this month only missed like 3 days I done a test on the 25th of June got a BFN, I've had no symptoms of pregnancy or of AF so what's going on?