-- Posted by Anonymous at 9:53 am on Oct. 5, 2008 I'm 18 years old and never had this feeling like I do now.  I feel like I'm literally insane and very emotional.  It started about a week ago, a week before my period.  I'm thinking it's PMS but I've never really had PMS like I am right now.  Is it probably that, can it just spring on even if you've never had it before?  Or is it something else? -- Posted by HatesYou at 9:55 am on Oct. 5, 2008 You're preggo that's what it is. -- Posted by devilcurls6981 at 9:55 am on Oct. 5, 2008 Maybe you're knocked up, have you been sexing lately. -- Posted by 2kewl4u2know at 9:57 am on Oct. 5, 2008 Sometimes yeah...or maybe it has to do with a medication you're taking.  Did you start on any kind of hormonal birth control recently? -- Posted by Miss Prophetess at 3:44 pm on Oct. 5, 2008 Wait until after your period and if it's stopped, you can contribute it to your period.