If she is bleeding she is not ready yet. She should stand for him in about a week.
Mine have very little bleeding they keep themselves very clean.
You should research and read everything you can find on breeding. If you have been planning to breed, you should have already researched the reproductive cycle of dog.
I don't mean to sound judgemental, but you should have already done your homework.
http://www.petpeoplesplace.com/resou...d-dog-mate.htm