Can’t find a reason

My period should’ve start on 7-8th of June. I had no sex for long time, like 6 months. And on 7th of June I had sex, I thought it will start next day but no. Still not.. usually my period circle is quite accurate, every 28 days...

And usually my breasts become sensitive like one week before the start.. but nothing happened yet..

I don’t know what to think..

Not sure if this month was more stressful than others... just don’t get it, 5 days late, feeling anxious...😟