I have very unreasonable paranoia. I get anxious about: people hearing what I about them even if there is no way they did, me or loved ones getting a horrible disease or into a car accident, having caused a car crash even though I KNOW I didn't, being pregnant even though I NEVER had sex, my car or bike being stolen even though I made sure I locked it 3 times, thinking my grandma is dead when she's asleep and I don't hear her breathing. Why is my brain doing this to me?
This is just free-floating anxiety, and your brain is looking for a home for it. I have had every single one of these paranoid obsessions at different points in my life. It’s the result of a lovely, hyperactive brain and lack of places to exorcise your demons. You should be proud of it, because I bet your brain serves you extremely well in other areas of your life. Just not so much in this one.
If you don’t already, start exercising (ha ha exorcising and exercising) to help get you out of your own head, and go to see a therapist. You aren’t crazy, but learning to silence that constant anxiety-voice takes more than I can impart in a Tumblr post.