First Time and now I’m a week late

Lost my virginity on the 13th and according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> I am a week late. We used a condom, it didn’t break or slip off, everything was pretty normal. My period has never been perfect but now I’m kind of freaking out because <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> is telling me there is a 7% chance I’m pregnant. Not on any form of birth control, had sex once with a condom. Any advice??