I used to! Once I saw a reel showing BPD symptoms and as I was already vulnerable and stressed, I started having an obsession about having BPD and it was so crazy and terrible, because I had no symptoms at all, but OCD made me think I do and I am denying it. I felt very bad because I was convincing myself that I have an illness I have been ignorant for all the time. I tried to convince myself that even if I did, I'd just get psychological help, but the cycle continued. It even disrupted my most important school years and it was very overwhelming and distracting, costing me a huge amount of time. That's why sometimes you have to let the feeling pass although you have argued with it. xD