My take is threefold. Firstly, if something did happen at some point and you don't remember it currently, then it is highly unlikely that you will be able to trust the accuracy of any 'memories' you may discover in the future.
Secondly, issues like social phobias, eating disorders, fear of relationships and inability to trust people have many MANY different causes, and the treatment any of them does not necessarily require the identification of their origin.
Thirdly, if you actively go looking for sexual abuse in your history you will likely find it - whether it truly happened of not.