Help me please

Hello ladies I’m 4 months postpartum and my periods haven’t been regular I had a one day period last month and nothing since.

I had sex for the first time on my expected period BUT also had discharge that indicated I was ovulating. I’m now 9 days late on my period I’ve been getting the cramping but no sign of AF.

What advice would anyone give me as my periods are irregular now and I’m not sure whether I ovulated that day or not...

Is there any chance of pregnancy as he done it inside me and I obviously had unprotected sex.