Sexual dream as a kid

There's something that's really bothering me, and I haven't been able to tell anyone, not even my Therapist.

when i was like 5 years or 6 years, i dreams that i got rapped bay a dog , and there a lot of sexual dreams like there a lot of ppl cheeks me or my private area, so i was thinking maybe something happened when i was young but i can't remember but my my subconscious mind still remember, and am not interested in kids but i used to dream wet dream with kids !!! and i hate that so much but it get less than i used to when i was 15

and i don't Stop thinking about that if there something happened when i was kid and i don't remember, i just remember i was in some conversation maybe that contact sexual contact with my cousins who are is older than me ,