Hi, I m fourteen, I am sexually active, but I do not have sex frequently, in fact, I barely have sex at all. Sperm has never gotten near my vagina and I have practiced safe sex . I have noticed I have been getting my period very irregularly, every other month to be exact. I am overweight , and I am in high school. I was thinking my missed period could be due to stress, or even my weight problem. I have not gotten my period in two months, and I am very nervous. Please, help.