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How do I know if my obsession really is ocd or If im lying to myself about a past intention

How do you know if it is OCD or just anxiety caused by inner conflict that needs to be resolved? Thoughts - discussions?

I struggle to understand when a thought is an intuition or intrusive, especially with relationship OCD. My problem is I have a great intuition. There have been many times when I thought something that made me anxious, and said to myself “it’s only OCD”, but then that thought turned out to be true. But there have also been times when it turned out it was just OCD.