This is my first month on combination birth control pills. I began the pack 3 days after my last "natural" period ended, and because of this 3 day delay, my doctor told me to wait a full month before having unprotected sex rather than just 7 days to be safe (my boyfriend and I did not follow this advice towards the end of my pill pack. Irresponsible, we know, but in the end nothing came of it). I am now on day 4 out of my 7 placebo pills, bleeding heavily, and had unprotected sex today.

I am protected now, because I have taken my pills correctly for 3 weeks and had my period, correct? And will continue to be protected so long as I take my pill at the correct time at the end of my placebo week?