Hi i'm 21 and since a spinal surgery i dont have my periods at all! I dont even see a drop of blood. I understand that i have a hormonal prblem because i'm putting on excessive weight and facial hairs. My skin is also starting to darkin and i'm getting spots. I am not sexually active as yet but i would like to know if it is possible for me to have sex without a condom and not get pregnant. Can any one help me please?