So much going on :-/

I missed a pill last Saturday (my second week of pills). So I took 2 Sunday night. Then I started spotting around Wednesday of this week. & I had sex with my boyfriend (we're in a long distance relationship) really early this morning. I've been taking my pills on time since Monday. & My period is due this week (Tuesday or Wednesday). When we were having sex. we started to use condoms but ended up taking them off. He did pull out but I know that doesn't always work. Could I be pregnant? According to my pack leaflet, if I miss one pill I don't need to use backup, but I'm just trying to make sure.