Will plan b work around ovulation?

I had an accident on Feb 22nd, day 12 of my cycle. Immediately after I took plan b (within an hour) my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> says I was in my fertile window and estimated ovulation to be on day 15 (feb 25th) I took plan b before in my last cycle cause the condom broke and I bleed for a few days exactly a week after taking the pill. Then i got my period right on time. But this time I did not bleed at all. Im kind of getting paranoid. Will the plan b work considering I took it right away?? I haven’t experienced any symptoms besides on and off cramps and acne. My period is Supposed to start on March 10th.