Oh Nymph, That puts a whole different spin on things. No wonder you feel depressed and have a whirlwind of emotions when thinking about sex.
I imagine that any person in the world would react like that, having been abused as a child.
One of the posters who used to post regularly here (Corri) was also abused as a child and it took many years of intensive therapy for her to get to the point where she is today. From what I understand it is a long and arduous process. You can look up some of her old posts.
Speaking of therapy, have you ever been and to what degree was it helpful?