No i doubt that you will convince but there can always be a possibility. Best way is to do a Urine pregnancy test via kits available in the market. Other method is to get an ultrasound abdomen done. However at this stage it will be very small and hard to detect. Even if you are pregnant and you require MTP then I would suggest better to wait till your next date of bleeding and if it doesn't occur then get an ultrasound done and opt for MTP through gynecologist.