intrusive questions abt morals

do you guys also have suddenly intrusive questions about horrifying things that should never be questioned at all? I was seating in the toilet seat and heard a voice say "but why is [ ] wrong?" and I was suddenly taken aback and felt anxious, I tried to give answers, making a list, but they weren't enough to satisfy and disprove that horrible question. I was like "it's that all?", I was trying to give solid answers, but then my voice was like "and so? It's that the only thing that makes it wrong?" and I was scared of it. There should be a definite undeniable answer that kills all the arguments that go in favour of that question, that nullify the logic of the animal, of the monster. Like I have convincing arguments that go against my values, that I dislike and I find wrong but that yet "sound" logical, convincing, like "what abt it? if x wants it, then why would it make it wrong a part from being it immoral?" and that disturbed me a lot. I feel like what I have as answers against it isn't enough, probably because it has always been a dogma for me, and I want it to be enough, I want to be confident abt my values to the point that they are undeniable, undoubtable. For me that crime is the worst thing ever in the world, worse than murder, but I feel like my reasons behind it are not certain or solid enough, I'm not confident abt it, it just sickens me, "but why? Is it because society told you? so if wasn't for that maybe you would have been okay with it?" I just know that I cannot tolerate it at all in my core, I know it makes me feel suicidal. Is it because I'm wired that way? What I'm afraid is also that this is simply a barrier that I self-imposed, and that if I remove it, something horrible is hiding beneath. And I think I've already experienced it, I just don't want it to be true with all my life, so I'm hoping it was all OCD. I feel like I'm in denial.