Just because I wasn't raped am I Okai to say I was sexually abused

Lissy Billie-Shirley

Can I still have been sexually abused although I wasn't raped. I feel like it's invalid. I was 8 and it was my brother and he touched me inappropriately. I have PTSD from it but I feel like its invalid because it wasn't as severe as rape. Someone please help me figure this out