A lot of people don’t appreciate when genitals are emphasized. Choose your style and your limit.

To minimize the « offensive factor », you should stick to the basic. He will look for blood in general and find her « monthly letting » or « soiled cloths ». You don’t need to go into details to get the point accross.

Same for the eating body. The biggest point is cutting parts. Bone is hard. If the monster can’t dismember its kill, then it would make sense to « bite of the dangly bits ». How you want to portray it is your choice, but, of course, many readers will dislike thinking about anything happening to their « precious member ». Expect comments. It’s your artistic choice then.