Ttc advice.(implanon)

Francesca
Hi,
​my partner of 7years and I are ttc #1. I still have the implanon contraceptive implant in my arm which was a 3yr one and it ran out in April 2013. I haven't yet been able to take this out which  I will do ASAP.
​Is it still possible to conceive with this in my arm even though it had an expiry date of last April? 
​I think it should not affect trying as it should not have any hormones left to prevent pregnancy but does anyone know?
​Thanks in advance. X