Chances of being pregnant

ki ki

Hello all,

I started taking my birth control on the first day of my 7 day period and have been taking it consistently since (on the end of my first pack). I had unprotected sex with my boyfriend after my period ended which was over two weeks ago and I had even been on the pills 7 days. I am now on the fourth day of my placebo pills and I still haven’t had my period. Is there a chance I could be pregnant? This is my first time on birth control sorry if this is a stupid question.