Can it be possible ?

I've been on birth control for years on and off  but more recently I've been steady. However, this past months of bc I didn't take the period pills , well I took 2, I didn't get my period which I assume is because I didn't take the pills to start it. Me n my bf have had unprotected sex( no pull out) a couple times during the week of those pills. Could I possibly be pregnant? 2 months ago the same thing happened but I got my period and didn't show any signs of pregnancy although I was extremely scared. I just need some advice and insight on what could happen and what I should do.