Is there a possibility that a women can get pregnant when they haven't gotten they period for 7 months?

Yes: If you ovulated and are having sex, you can get pregnant. Timing of ovulation is especially difficult to predict when you have menstrual irregularities. Take a pregnancy test for your answer AND see a gynecologist about your abnormal cycles. Even if you are not pregnant, you don't want to ignore the fact that you are not getting your period.