ok. me and my boyfriend just had sex for the first time. I have been on birth control for about 4 years. I had just ended my period about a week before we had sex. Also i had missed 2 birth control pills after having my period. We did not use a condom, and he ended up blowing it in me. He said that only about half of it actually was in me because alot of it was on him. The next day (Less than 12 hours after this unprotected sex) i took the Plan B pill. What are the chances im pregnant? It said that the Plan B pill is 89% effective.

What should i do? Am I pregnant?