16 and pregnant

Grace
Holy shit so New Year's <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> I forgot to take my pill and we did it, I didn't get the emergence after pill for 2 days since shops were closed, this means the pill had a 80% chance of working, however this made my period that month irregular coming within 2 weeks. Now I'm late, is it possible I'm pregnant or is it just my periods now fucked