Hi, so i have a really unexpectable period. one month i actually got it twice. and in result december of 08 i got it late on the 29th. Now its january 31st of 09 and i havent got my period yet.. i have had sex once and that was on the 12th.. but it wasnt for the long and we used the pullout method... so i dont know what to think.. i have had cramps. but not breat tenderness or nausea.. HELP please.