Advice?

Ok. I started taking my birth control pills a little early (it said I should wait to take it till the first day of my period) and now I haven’t gotten it at all. My man is freakin out because we had sex when I should have had my period and now thinks I’m pregnant. <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> is telling me that I’m 17 days late. But I should have still been ok right...? Or should I be worried