Used to masturbate to family members

So when I was going through puberty I used to masturbate to pretty much everything including my family members. I even remember my brother in one of my fantasies. I feel sick to my stomach. I have ocd so I’m not sure if this is being blown out of proportion. Once I no longer was in puberty I never did that again. We were both sexually abused too by a cousin.

Am I sick or should I chalk this up to being a hormonal teenager? The thought makes me want to vomit

(Remorse)