I started my period when I was 11 I am 21 now. My last regular regular period started 08/06/07-08/1/07 my next period didn't start till 10/19/7 that's a month and a half late. Now it's two months late. I've actually being trying to get pregnant but all the pregnancy test have been negative. I'm starting to get worried that this is a sign of infertility. Somebody please reassure me, PLEASE!!