Well it depends on what you mean by "bleeding". I am gay and it is not that rare that you can get anal fissures if you are a bottom, which essentially is the same thing as what you did, only u had fingers up your ass. There are a lot of blood-vessels in your anus, being an erogenous zone and all, and if its bleeding as in pouring out of of ur ass when standing, then get to a hospital ASAP. But if its like u get small stains of blood after going number 2 on the toilet, then you are fine. Those fissures can take some time to heal.