@Anwesha: As you are still away from your fertile window, you have very low chance to conceive today. Though one can get pregnant on any day of the cycle, but the chances of conceiving outside the fertile window are very low. Eg: You can safely assume that only 3 out of 100 women will conceive on this cycle day, whereas about 35 out of 100 women will conceive during fertile days.
@Anwesha Normally the ovulation day comes after 2 weeks from your period end date. But this is not the same for everyone. It depends on your menstrual history as well. If your period date was on 10th period, then the chances of pregnancy after period are low. Hence the prediction is an approximate estimate.