Hello, I have been on the birth control pill mononessa for 3 weeks. I have finished all of my blue active pills and I am currently on my third sugar pill. I had unprotected sex with my boyfriend on Sunday in the pool (he ejaculated in me) . The day after (Monday) I got my period. Can I be pregnant? That Sunday I started on my first sugar pill. I have never missed a pill and I ALWAYS take my pill at the SAME TIME EVERYDAY. Can I be pregnant?