My Boyfriend And I Had Sex For The First Time

My boyfriend and I had sex for the first time March 10th. I take the hormonal birth control Camrese consistently at 10 pm everyday and haven't missed a pill since early December. We also used a condom, which from what we know, didn't break or have holes, and I also took Plan B just in case. What are my chances of becoming pregnant even with these three forms of birth control?