I recently disclosed something "weird"and shameful to my t and she seemed to totally take it in stride. It's about other fetish-type stuff, so I can relate to that aspect. The hardest part was telling her... and i hid behind a pillow on her couch during and after telling her. A lot of my disclosures end with "please don't hate me"...

If it's something you feel you want to talk about, go for it. But i wouldn't suggest rushing it if you feel really uncomfortable about it. If you definitely want to talk about it, maybe writing it down would help and then either reading it to her or letting her read it?