Help I think I'm pregnant

About 3 weeks ago I missed 5 days of birth control because my mom forgot to call it in at the pharmacy. Me and my boyfriend often have sex and sometimes with a condom but he pulls out everytime. After I got my birth control back I took 2 a day till I caught up. Now I'm on my last 3 white pills of the month but I haven't started yet. Even though it's only been 23 days since my last period. And I usually take longer than that. Could I be pregnant or do you guys think it could be because of my messed up birth control? I can't be pregnant I'm barley 16. I'm freaking out and have too much bad things going on right now with family. If I don't start by the 28th day then I'll get a test.