sir i have done medical test for saudia in DHK medical center in delhi sended by gamca medical center... as in DHK medical.center they does vaccination one was rubella and another was i didnt remmba..so as aftr ds all my.medical report came fit bt now my priods r nt in flow as they have alwayz been regular ds time flow is nt dere its very less ... so i.want to.knw is ds because of vaccination ? can vaccination cause hinderence in periods flow ??as my.periods should come on 29 dec bt it came on 31 dec 2016 bt veryless ...and on 1st of jan it came bt nt in flow as it used to b ... so dts y i thought to ask is ds becz of vaccination ???