I've been on implanon for about 2 1/2 years now & throughout that time I've probably take 3 sets of 7 day amoxicillin pills.. I've never had a period on implanon until two months ago.. I've been spotting & on my period ever since.. so I was wondering if the amoxicillin is causing this & what I could do to stop this.. I'm currently taking mononessa 28 with the implanon but I think that is making my period worst.. please help !