Thank you for posting your question here, I will try to answer it to the best of my abilities.
I really dont think an anesthetic
can effect how the implanon
works, they are separate things and they both work in different ways. As for why you have your current symptoms, well I am not quite sure why you are feeling the way you are, it could be a result of whatever procedure you had done which required the anesthetic and it could be that it your PMS.
Anyhow take a home pregnancy
test and that should give you your answer.
I hope this answered your question.