Is bleeding after having anal sex normal?

No: This suggests mucosal damage. This can substantially increase your risk of HIV / other std if not using condoms. Should give it a few days rest, then resume w/good lube & condoms (always). If constipated, you may be contributing to problem--consider stool softener (miralax (polyethylene glycol) / fiber gummies / prunes -- whatever you can take reliably). Steroid hemorrohid cream might help also.

Means trauma: Anal receptive sex can cause tearing of anal tissues including perforation of the colon. Repeated anal sex can weaken the anal sphincter muscle & cause problems with incontinence. It can also lead to transmission of sexually transmitted diseases and other infections.

No: Bleeding from the anus is not normal under any circumstances! you need to to get examined and treated for whatever injury you incurred and avoid anal intercourse. The anius is an exit not an entrance. You can develop some very serious life changing issues from continuing this behavior.

It happens: But any bleeding is not normal. You may have aggravated some internal hemorrhoids or torn the anal canal. Neither should be ignored especially due to the risk of infection. See your doctor and defer on future anal intercourse.

Trauma: Anal receptive sex can cause tearing of anal tissues including perforation of the colon. Repeated anal sex can weaken the anal sphincter muscle & cause problems with incontinence. It can also lead to transmission of sexually transmitted diseases and other infections.

No!!!: First i would suggest avoiding anal sex. Secondly, if the bleeding doesn't stop within a day or two, you need to be examined. You may have developed trauma to the area that can can infected if not diagnosed and treated properly.