I have worked through issues of SA during the past six years. I too had no memories before the age of 19 (or very little - just bits and pieces here and there) Horrible images -things that happened to me as a child - gradually validated by other members of my family. Like, a room that I remembered as a child down to the wall color and bedspread - confirmed by my mom. So don't discount your images/memories - they may be trying to tell you something.
But you must open up to your T and not keep them inside where they cause hurt and confusion and shame. Trust me - s/he won't be revolted - they've heard it before. When it's out in the open, you can heal. Good luck