My period ended on November 14 and then I had sex on November 16 and the condom broke and we didn't realize till after he came inside me. We went right to store and got plan b and I took it right away. On November 21 I got my period again for a week even though I just had it. Now my period is late is this normal? Is it possible for plan b to mess things up that I even skip a month? I'm also super stressed more then I have ever been because of work and school could this be a big part of delaying my period? I am getting all the normal symptoms to leading up to my period like champs and break outs of that sort. I need help!