Could I be pregnant or just waiting for my period?

So I have been getting the DEPO shot religiously since March 2015, and five months ago decided to switch to the pill. Well now I have decided to take a break from the pill and not take any form of birth control right now. My boyfriend and I are pretty sexually active and my birth control is the only form we use to prevent pregnancy. I finished taking my final pack of pills (only the blue ones) last Friday (12-22) and I expected to get a period afterwards. I’ve been cramping but nothing yet. Am I paranoid? I haven’t had a period since 2015 so is there even the possibility of me being pregnant?