My day just keeps getting worse

Y’all I am so goddamn mentally exhausted it’s incredible. I have a cat, she’s two and in perfect health, but my OCD won’t leave her alone. I’m constantly worried she’ll get crushed under a recliner or die of heat stroke in the dryer. My mom accommodates as much as she can, we keep the dryer shut and we keep a cat bed in the living room so she has a place to hide instead of going under the chair. I’ve never had an animal more than a year or so (hamsters that met tragic ends no matter what I did, and a senior dog that we put down after a year due to declining health) so I think the lack of experience with a pet is a big thing here, and she’s the first animal I’ve ever actually bonded with for real. I just want to make my brain stop describing her possible deaths to me and I can’t figure out how. Anything is appreciated. Thanks for reading, folks.

I have to put my cat down soon, I can't even really put into words what this cat means to me. I adopted him just under 2 years ago and in that time weve had a ton of fun together. My girlfriend and I treated him as a son and he absolutely adored attention. He would follow me into the shower and just vibrate because he was purring so much. He sleeps in between us every night and every morning he headbutts me awake so ill feed him. He's always hungry all the time and will begin meowing like crazy if he hears the rustling of a bag or the tap of a can. He waits for me by the door when I get home and meows at me when I'm about to leave. Everyone that's met him tells me he's quite abnormal for a cat he's overly trusting allows belly pets and will hop into your lap immediately. He meows directly at strangers and rubs on them and prefers the company of people to other animals. He's highly unique I'm told and that's what makes this all the more painful. I'm no longer going to wake up to his beautiful green eyes or his headbutts but instead an empty space in my bed. I've always hated cats since I was young I thought they were inherently mean. Owning one has shown me how wrong I was and how much I wish I met my cat sooner in life and how much more fun we could of had. I love you with all my heart BB and I'm dreading the inevitability of having to say goodbye to my family. Thank you for loving me and guiding me through the darkness of my mental illness and making me feel loved even when I hated myself.

This morning while i was eating cereal my cat approached me as always, as i usually give her bits of milk for herself (very small amount, and she doesnt get to drink milk often) but today a thought suddenly popped up that said "what if my cat has rabies and i just dont know" and it made me so paranoid i denied her milk. I can see that it is irrational but it scared me so much, sorry michi.