I’ve had intrusive thoughts my whole life. At first , when I was very young I was like “ where the heck is this coming from “ ? It bothered me very much.
I felt ashamed and scared. Then , like was said, I realized that they were just
that , thoughts. I think this is a way for your mind to cope with certain things in reality that you can’t , and shouldn’t make real. Just like dreams. Fantasy’s are just that , wish fulfillment unfulfilled. Like was said , let them pass away like a cloud in the wind. I’m not trying to get Freudian here but I think he had that part right. By themselves they are nothing real. It’s what you do with them that is real. Use them in a positive way. They may help you know what you need to do to BETTER yourself in some way.
Bottom line , you are far from alone.