Does Primolut N Interfere With Implanon?

I have been taking Primolut N 5mg 3x a day for the past 90 days to control bleeding, at the time of my consult with my gp, I asked if Primolut N would interfere with my contraception which is the inpalonn, I am on the last day of my tablets and have just read that I would need to use non hormonal contraception. During the last 90 days I have had unprotected sex on a daily basis with my parter, I am now concerned we may be pregnant before we are ready.