A.C.
Having been through 7 years of pretty consistent molestation, I know where you are coming from. I also did the revert into myself (NO ONE could touch me for a long time) thing. It can be very difficult to "let it go" (and I'm not saying that in a forget it happened kind of let it go way).
One suggestion ... get to know your body in every way (touch, taste, sight (use a mirror), smell). Do this with and without your husband. What do you REALLY like? What do you REALLY dislike? etc. Basically PLAY with yourself in any number of ways to find what works and what doesn't work for you. EVERY woman should do this in my opinion. Knowing your own body is important not just for sexual health but for physical health too.
Also ... identify what your triggers are. Is it the sex itself? certain touches? certain looks? certain "moods" (lighting, sounds, smells, etc)? A good way to see if there is a pattern to the "freak outs" is to keep a journal. Write down as much as you possibly can about what was happening and so forth when the freak out occured. What was in your head and so forth. If or when you can identify triggers then you will be able to deal with them ... either by working through them or by avoiding them.
Finally ... it's going to take work to get past it ... and some things are NEVER going to go away. It's just that simple. There will ALWAYS be things you just can't handle ... and that's OK. ACCEPTING that is important. Understanding and accepting that this happened, you weren't responsible for it and that YOU are in charge now will help also. Easier said than done .. believe me ... I KNOW. But keep working at it. It's worth it.
As a final thought ... something I try to get through to my idiot brother (love him though I do) ... Yes we had a shitty childhood, but we're not children anymore. We have CHOICES now that we didn't have then. And we can choose to live a different, better, happier life. It takes work and really a willingness to let go as much as possible and accept that the past can't be changed. But my today is in my hands and for the most part I can make it what I want it to be.
Good luck sweety. Feel free to PM me if you want.