I've had an implanted contraception in my arm for over a year now. I was tested positive for chlamidya and I finished my antibiotics cure two days ago (twice a day for seven days). I'm not sexually active, last time I had sex was in July, and I took 6 pregnancy tests around two weeks ago which all came back negative, so I am not pregnant. I've also had my period from July until this month October. Why have I missed my period? I'm healthy, but lack iron and vitamin d. I am also a full time studen