Missed a pill and don’t know when…

I’m taking the combination pill and as I’m on the last week(2 left), I noticed I’m a day behind. I must have missed one along the pack but I have no idea where. What are the risks that I’m pregnant? We use double protection (condoms) 85% of the time, and the rest of the time he pulls out. Also, how do I start my new pack? Do I just break a day and continue on Sunday (my normal day to start).