I started my combination birth control pills on the 5th day of my periods. My boyfriend came in me on the 6th day of me being on birth control. I read that I will be protected from pregnancy immediately if I take the pills on or before the 5th day of my periods but one gynecologist just told me that for full protection I need to start on day 2 of periods. I'm panicking a little and would love to get some help. Do I have a chance of being pregnant?