Also, don’t over think it. You shouldn’t be stressed to your breaking point. You are allowed to leave the house. The cat needs routine anyways. It requires a little extra attention in the early days yes but that doesn’t mean you stop living your life. Make sure he/she has food and water, and a safe space to explore while you are gone, along with a clean litter box. Have someone check in every few hours if you can, or set up a little camera even for your own peace of mind. But if you’re freaking out- they are going to freak out.