Am I pregnant?

Bailey
I've been on Ortho Tri Cyclen for almost 2 years. I had unprotected sex Aug. 13th and 20th. He pulled out on both, but Aug.19 I threw up 3hours after taking my pill. I did take my new pill at 5pm on the 20th when I normally take it at 8:30. Period is supposed to start next week. Thoughts?