Ipill and delayed periods

Hii, I'm having a scare rn, and very worried. I have PCOD. I had sex with my bf multiple times on 31st March. He didn't ejaculate inside me and we used condom for most part. But he did once or twice penetrate without protection for a few seconds. I immediately took an Ipill within 6-7 hours. And my period tracker showed that I was maybe in my fertile window. I had withdrawal bleeding/period on 8th April. It had some big and small clots. Ever since, I haven't had my period yet. I took two hpts, and both came out to be negative. Can anyone help regarding this? Has something similar happened with you?