Expired implanon?

I'm not sure if this is an appropriate question for this website but I'm concerned and no websites seem to have the answer. I've had implanon (the birth control arm implant) for a little over 3 years-the expiration for it is 3 years. I can't go and get it replaced for a while and my doctor never told me whether I could get pregnant after the expiration date because I wasn't sexually active at the time and I just forgot to ask. Does anyone know if you have a more likely chance of getting pregnant after the expiration date?
Expired implanon?
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