Plan b missing period ?

Hey my pretty ladies 🥺.

I was wondering if anyone else’s period changed after taking a plan b? I took one sometime around June 22/23 & got my period a week after. Then, I should’ve had my period August 2nd and it still hasn’t come. My boyfriend and I used protection in July. So there was no need for a plan b. I have no pregnancy symptoms .. just worried my period hasn’t came yet.