hello can anybody advice wht should do ,i had medical oberation in feb 9 th bt the periods still nt come i had pregnancy test bt ws negative  n i also had ultrasound also bt all are okk...i m vry much affraid about that why my periods nt come....plz anybody tell wht should i  do one pf my frnd also told me about the medicine that can help to come periods  i mean after having that medicine period will start should i hav that medicine