I hve been really scared because of this. I was supposed to have it around the 10th and now it's the 18th! I am positive that I am NOT pregnant, and I have I already experienced cramps, breakouts, and mood swings but not that much any more. The first time I got my period was a year and a half ago, so is this normal or is there something wrong.

At the beginning, when you first start having periods, it may not show up or might be very light. Keep track of when you missed it, and wait to see if it shows up next month. If it doesn't, a doctor check will ease your mind.

Are you having sex? If not, then there is nothing to worry about... if you are,well...