I couldn't bring it up in therapy so after a few months I emailed my t between sessions and asked her to bring it up, which she did.
I think she asked what I do, what with, how often etc. she asked to see, and I said no.
It's been off and on, I had to email again recently so she would being it up...she didn't ask to see because I sometimes do it in a really weird place, where even I can't see, and I definitely wouldn't want her to see

I don't know if it helps to talk about it or not.