Thats rough, for sure.

It may not be a tear, but could be a hemorrhoid, which is an extended, burst blood vessel caused by pushing too hard. They can bleed a lot, but often aren't terribly painful. They're also easy to re-aggrivate and can recurr.

You should use a mirror, have a trusted loved one, or even a doctor check you out, for proper treatment.

Better safe than sorry, when it's your bum.