second pfizer dose and period?

I know this may be weird but here's my story, I am a day late and I don't know if it's because of stress because some days ago I was worried thinking I was pregnant from my SO fingering me with possible precum on his hands (which I read it's impossible)but then I also read that many women had their period late after the second dose of the Pfizer vaccine so, has anyone experienced this? Do you think I'm pregnant or not?

Edit: I've had my normal pms symptoms this week, the vaccine just made my arm hurt for two days

💗ANOTHER edit💗 my period came 26 minutes after I'm having horrible cramps stay safe and thank you so much♡♡♡