Period/Pregnancy Maybe ?! HELP!!?!

AVICI
Soooo I had unprotected sex on 11/20 and he pulled out before he came.  I started my last period on the 1st last month . So my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> app says im 2 days late. Can i be pregnant from pre-cum even though its only a 22% chance .