Missed birth control- had unprotected sex?

If you missed the last few days of your pills then that is why you had your period a few days early from withdrawal bleeding. You will probably be ok, but the birth control pill is only about 98% effective when taken correctly. So there is always a chance you could get pregnant when you screw around with missing them and trying to play catch up. You are probably not going to get pregnant, but there is a chance. The placebo's only contain vitamins or sugar so you can take them or not. THey are there in the packet so people will continue to be in the habit of taking a pill everyday.