Translation of "Anal" in Japanese

Because what they really don't like is anal sex,

嫌われる本当の理由は アナルセックスなのです

My friend Kim has really bad anal bleeding sometimes.

キムと言う友達が、時々、たいへんな肛門出血があるんだ。

After having anal sex with my girlfriend, we usually need to have a good wash.

彼女のおかまを掘る後でたいていよく洗わなきゃならないんだ。