Pregnant on Nexplanon?

Hey guys so I've had the Nexplanon since August 2015. My boyfriend and I have sex pretty frequently and according to eve (which I've only been using since January) predicted my period to start about 11 days ago. However my period is horribly irregular so I don't know how accurate that is. I do know that the absence of periods is a common symptom for Nexplanon, so I'm wondering if any of you think there's a chance I'm pregnant. 
I know the risk of pregnancy on Nexplanon is about .03% and my boyfriend has never finished in me, although we don't use conforms. 
Advice please!! 

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