Period issues

Faith

Help can someone pls explain why I’ve not seen my period, it’s supposed to come on the 28th now it’s 29th and no signs at all, instead I’m ovulating😭this is scary, I had sex with my fiancé 2 weeks ago and I didn’t take any pills cos here they said my chances of getting pregnant is very low so I ignored the pills

I’m so so scared😭😭😭