So last time I got my period was, Dec. 2nd it lasted for 7 days, my cycle always last 7 days -.- anyways its Jan 12 now and I haven't gotten my period but I have really bad cramps, and my breast hurt, also whenever I have my period the cramps are really horrible, can I have pcos or am I Prego, or what the heck is wrong with me? Like miscarriage or is this normal?