Im fighting thoughts like the show "A Beautiful Mind".answer only if you have knowledge in psychology, thanks.

Its all related to your OCD. If you've been going through treatment to reduce some thoughts and behaviors, then you might be replacing them with these new thoughts. Perhaps just try to distract yourself with a task you like. Since these are not destructive thoughts, you'll be fine as long as it doesn't lead to anything more drastic, like going to the lecturer's house at 2am to check on you paper. This is something you need to discuss in treatment: continuing to have obsessive thoughts and being unable to break the cycle.