Stopped birth control

April • Mommy to a 6 month old :) 19 years old. single :)
I started the birth control patch on June 1st (also the first day of my period, period stopped on the 4th) and it fell off on the 8th, I also had unprotected sex on the 8th, and started spotting after it fell off until the 12th then I started another period that lasted 3 days, I'm wondering if there's a chance I could be pregnant. since I had two periods I don't know when my next should start or when I ovulated or will ovulate.