Why would she need more exposure? Even before she made the news, Fluke was getting exposure to dozens of guys a day (extrapolating from her claimed birth control costs).
Rush commented on Fluke's speech without having heard her speech. He picked up a news summary from a conservative blog and riffed on it. Rush even named the blog.
Near the beginning of her talk, Fluke said she wasn't going to talk about her own life, but the stories of other women, and that's what she did.
She told four ridiculous stories and one that, if true, was a insurance medical need issue, not a contractive need issue.
Fluke never spoke about her own sex life.
You can read Fluke's speech here.