Hi Iam 20 Years N I Had Sex On 11

hi iam 20 years n i had sex on 11 march n it was bleeding aftr having n i took d ipill within 2 hurs nw is days pass i din get ma periods as ma periods dates was 11 n it also changes d date evry month whn will i get ma periods nw ?? is der any way tat i can get ma periods faster ?? is der any harm or can be negative result ?? plz help