Does Everyone Experience Vaginal Bleeding During First Sex?

im a 20yr old girl,at the age of 19 i had intercourse for the first tym,problem is that i didnt bleed.due to this my fiance is suspicious..IS IT NECESSARY THAT EVERYONE BLEEDS WHEN DOING IT FOR THE FIRST TIME.??IS IT THE ONLY PROOF THAT I WAS A VIRGIN BEFORE?i have no medical problem,have normal menstrual cycle,but ys when i was 15 i was into gyming n twice got heavy menstrual flow,please help.thanking you