Risk of Pregnancy (help)

So I just had sex and we were rubbing genitals before he put the condom on. After sex, I looked at my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> app and it said the risk of pregnancy was high but my chances of getting pregnant were at 7%. I just finished my period this week.

Not sure if I should buy Plan B in the morning. Please help ASAP.