I understand where you are coming from, Typo.
My experience is kind of like a rocky road, with smooth spots in between. I am in a happy relationship with my boyfriend, and am more sexually comfortable than I ever have been (and I'm almost 40). However, I do still have rough patches. A remark taken the wrong way, or a trigger reminding me of the past, whatever. I get chills up and down my spine. I close up emotionally, as I try to work through what happened and my reaction. It isn't instant for me. Working through the emotions and thoughts takes some time and my T's input. But, I do get through
Do keep those words in your mind as you continue moving forward. Best wishes and hugs to you Typo!