So excited about getting a cat, finally got one, now I’m terrified

Just graduated grad school, for the longest time I thought “A cat would be awesome!” Was looking up adoption sites, cat guides, the works. I even convinced my landlord who said a strict “No pets” to let me get a cat after 4 months.

Now she’s her, here name is Lily, and we went through a typical first night: She stayed in my room, let her slowly warm up to me. Next morning I had only one scratch on my hand and she was sitting on me getting pet.

I did only get like 4 hours of sleep from constant meowing and exploring, but she seems like a great cat. I’m terrified though. I’m terrified cause what if I can’t do anything anymore? I’m pretty big on gaming, but I live in a two story house by myself and I feel like I have to constantly watch her so she doesn’t get hurt, fuck up anything, I feel like I have legit 0 chance of taking my eyes off her.

Is this normal? Does this adjustment period move on? When can I start doing things I want and not have to worry if she’s getting into somewhere she shouldn’t? I don’t want to get rid of her after a few days, but I don’t want to live constantly afraid forever