Delayed Period: Plan B or Pregnant?

So, I lost my virginity this month and ever since then me and my boyfriend have been going at it ever since 😉. My period usually comes later on in the month. 3 or 4 days before my period was supposed to come, we had sex but the condom broke. He did not ejaculate, maybe small traces of precum was inside. Immediately, we ran and got a plan b. The day my period was supposed to come, I got the cramping but no blood, and I had tender boobs. My period is two days late and I’m concerned. Do you think Plan B may have delayed it?

Extra Info-

By the way, he used the bathroom so I would assume any sperm would’ve been flushed out.

I had sex on my fertile day but we used a condom. He did not ejaculate.

Cervical Mucus is very pasty/dry in texture.