Implanon and nytol

Hiya,
Just want to know whether Implanon is in any way affected my Nytol?
I'm 21 years old will have had Implanon 2 years this October (so got over a year yet before it needs to be replaced). My mum gave me a Nytol a few nights because I couldn't sleep. I have no idea whether it was the herbal one or not.
Could this in any way affect Implanon?
I only just remembered and I'm almost banging my head against the wall with worry. I did read that anything you can buy over the counter is unlikely to affect Implanon but I need someone to actually tell me I'm ok.
This was about a week ago so I'm way too late to get any form of emergency contraception.
Any help please? I can't get to a chemist very easily at the moment.
Thank you.