Okay, for the last five months, I have been struggling with intrusive thoughts about my sexuality. A very few times arousal happened and my immediate reaction was "EWW, NO, WTH!?!" Which freaked me out every time it happened and had me going "WHY BODY WHY?" Then I find this Reddit reply to a post by a person facing similar issues.
Which put some things in focus, calmed me down a bit, and made me facepalm. I've done the "double-check yourself" thing way too much which has just propagated my anxiety. It is gonna be hard not to do that. Now all I have to do is instill some alternate associations to the topic into my mind.