I was in therapy for 5 months before I raised a sex issue with T. I felt really awkward and embarrassed but she didn't bat an eye!!
After that talking about it didn't bother me as much.
I just imagined I was talking to my best friend, I even told her that lol in fact I think I started with "if I imagine you're my best friend it won't be as awkward." She rolled with it.
I'm sure your T has heard it all before and more. I don't mean to invalidate your issue, I'm just trying to make it seem easier for you to bring it up.
Maybe you could start with something like "I have an issue I need to discuss but I'm really nervous about it." Then hopefully your T will take some of the lead for you.
Good luck! [emoji4]