Plan B

Have any of y'all had a plan B fail? I took one after me and my husband had some fun a little too much fun 🤣 I took it 12 hours later but on day 20 out of 29 of my cycle so I've already ovulated but when we did it I was finishing ovulation. Never took plan b before and want to be cautious if there is a high possibility of being pregnant cause I work In a covid unit at a hospital