please help!! period late :(

I had sex on May 2. We used condoms, but we used baby oil as lube. The condoms kept breaking. He came twice inside two different condoms but we checked and those didn’t rip. At the date of this, I was on day 21 of my cycle, 9 days til my period. An app predicated my fertile window (when I had chances of being pregnant) were from April 19-April 29, with high chances on April 26. I am super worried. I took plan B the morning after. I’m concerned because I got sick April 25th and heard that can delay ovulation.
I was supposed to start my period yesterday, and I have had no effects of Plan B.
I weigh 192, im 5’5 if that matters

Can anyone give me advice on my chances of pregnancy at this point?