I am in a very similar situation.

All I actually remember is a wide variety of inappropriate instances that happened between me and some of my peers, and definitely an abusive situation though more intimate and personal than sexual between me and a "friend" for much of elementary school.

I have some bad associations with someone who is known to have sexually harassed others, but no actual memories. I used to have recurring nightmares involving a location that had to do with that person, and I always found that odd. I do remember a non-sexual thing that person did that I didn't like and have no idea what happened afterward.

I really believed I could fly when I was child and my mother kept trying to tell me that wasn't possible, but I was adamant that I could. I finally just stopped talking about it, not because I agreed that it wasn't true, and now I just remember how adamant I was and the imagery I had in my head.

I have other symptoms of having been abused, including a way too adult and warped preoccupation with sex when I was a child, horribly poor boundaries(that I've been working really hard on the last few years), and extreme reactions to rape scenes and hearing about rapes.

Advice:
Focus on making yourself as healthy as possible using what you do know and who you are now. Consider therapy if the triggers are too disrupting to your life or you can't improve your healthiness on your own. A lot of therapists now seem to be much more concerned with fixing what's going on now than delving into the past?