Is am the only one who gets such thoughts of one's own family regarding sexual thoughts

I wanted to ask if it is possible to purposely think of an intrusive thought and then shifting your mind instantly to something else? Is it still an intrusive thought if you have been thinking of it 'purposely' for a second? I dont know how else to explain it, but it felt like I was purposely thinking of it. Anyone else had similar experience what happened during intimate moments like masturbation I feel so ashamed cuz the thoughts are so bad they're either about family members children and stuff like that it feels like I think it I just want to know if I'm not alone I feel like a monster because it feels like I thought these things or like I did think these things and I don't know what to do I feel so ashamed and grossed I need help I just want to know if anyone had a similar experience to shed light on because I don't know I feel so isolated

You ever just get concerned that when you acknowledge your family members beauty or body beauty standards that you are somehow attracted to them? I often brush it off and say deep down I’m probably jealous cause I’m not good looking. But honestly I’m a bit frightened by these thoughts. As many would be.

Hey guys today I just wanted to come here and share an experience I have and I generally don't know what to do I feel like a terrible person for having these thoughts and for thinking them I genuinely don't know what to do I don't know the signs behind it and why I think the way I do but it's honestly driving me crazy I don't know what to do I have a pornography addiction for a long time it's where it's like anytime I'm an intimate moment or am masturbating my head just thinks these weird things always the same repetitive thoughts to of family members your younger sibling or a young child I myself am a 17 year old and I feel so disgusted I feel like I can't live my life anymore I feel like I'm a criminal cuz like it feels like I chose this these thoughts like I actively think them I don't know the signs behind it and I just really need professional help if there's any like therapist here that could fill me in that would be nice I would also like to know if you guys had any similar experiences because for me I feel like I have to rewatch pornography and do it right without the thoughts cuz I feel like the thoughts are just like to prevalent anytime I do anything related to masturbation why do I think this way I'm also just trying to be as honest as I can with this I'm not trying to make myself I guess a victim I'm trying to hold myself accountable if I actually am like this because I also have doubts in my head that tells me that I enjoy these things I feel like I'm going crazy someone help because it feels so real like I acted on them or that I was pleasuring myself to the thoughts and not towards the video it's just how can I live with myself you know also during it it felt like I was thinking the thought for a long period of time like it was dominating my head so I couldn't focus it felt l