Women of different ages and races have slightly different vaginal sizes and shapes. Are you lubricating at all when you have sexual intercourse or when you masturbate? This could be the reason you feel tight or that you bleed. I don't really think there is anything wrong with you, it is just possible that you are tighter by nature.
In addition if you feel stress or worried when you have sex, that could also be the reason why you feel you are right. Nervousness will tighten up muscles that will prevent penetration.
Tips would be that if you are not naturally lubricating that you should be using some sort of other lubrication such as ID lube or Astroglide, you will need to experiment with whichever one you think is best for you.
Bleeding could be a result of blood vessels that are just that close to the surface. rough or forceful sex can cause it