I am 20 and have been on the Implanon for almost a year now and I have taken antibiotics once for a full week and two weeks ago and only had one pill of a very small dose. When I took the antibiotics for the full week I got my period for two weeks and it was very heavy. When I took the one pill two weeks ago I got my period again but it has still lasted the two weeks. Should I be concerned that it has lasted this long when I only took one pill? My flow hasn't been heavy but it is still there, and has there been studies done on this sort of thing with the Implanon to see how long most women get their period for after being on antibiotics?
From official information on Implanon, antibiotics don't cause it to be any less effective even though some kinds of antibiotics can react with the hormones that are being released when you have Implanon. But, I know from my own experience that antibiotics can really mess up your period, especially in that way that they make it last for weeks even though its just spotting, so everything really depends on what antibiotics exactly were you taking?