Right, I need a little help, I have had the implant for almost three years and I will need to go get it changed in a few months. I started taking some new anti depressants a couple months ago, and lately I will randomly start my period (when before I only had one every six months) then think maybe I miscalculated, but then a couple of hours to a day later I will just stop bleeding all together. I was wondering if anyone else has this problem with contraception and anti depressants. It's doing my head in because I aren't prepared for it half the time?