Yes, it's normal to have worries about giving into the thing you worry about -- that's a central part of obsession. You're obsessing about obsessing.

I have had the same thoughts, but about hurting an animal. It's the worst thing possible, for me, so I will fear I will just compulsively do it. The thoughts are rare for me -- I'm lucky that way -- but for many people such things are intrusive and constant.

You're OK, friend. You'll be OK. If your best-self knows you won't hurt anyone, you won't. Listen to your best self.