So like 2 months ago I took a plan B and I got my period about 3 days after and now I've been getting it twice a month I don't really know if that's normal and now I'm freaking out because my last period started on the 29th and ended on the 3rd but I was supposed to get it again on the 19th and it hasn't came. I basically wanna know if that's my period getting on track again