I have an intact hymen. what is the reason i won't bleed on first intercourse?

Hymen: If it's completely intact, there really might not be a way for blood out. Sometimes it can sit within the vagina, which may lead to blood clots and infection. This is definitely one to discuss with your gynecologist.

Odd statement: You say your hymen is intact, which may be true, but may be an assumption. If it is truly intact, it is a door like structure at the entrance of your vagina with an opening about 1/2 inch in diameter.If you push an erect penis through that entrance, it will tear tissue & you will bleed. Some women are born without or have a very wide opening, having lost it in childhood.Then you don't bleed