What I've done sometimes is write it out in my journal and then read it, sometimes very very quickly

I don't think I've ever completely regretted opening up about things in therapy, at least not after a time.

I've also been known to open up with, "I don't know if this is something I should talk about. I'm worried about how you will react." I find that it's helpful to talk about my fears of my t's reaction. It helps put things in perspective.

I know t's have heard it all, and I remind myself that this is their job, and I may feel embarrassed but they probably won't.

I hope you do bring it up, or at least bring up your conflict of bringing it up.