I got a new dog and now I can't sleep?

So recently, I got a new dog. He's really good. Really friendly and cute, and he sleeps at the bottom of my bed every night. No, the reason I can't sleep is not because he moves around too much or he barks or whines. He's not causing any of this. I just can't sleep. Like, I'm nervous? I feel like something has changed. My room feels different. I don't know how to explain it but because of this I can't sleep. Can anyone explain this to me? Or tell me what I can do to fix it? I only got three hours of sleep last night because of this and I, like most other people on earth, enjoy and need sleep. So, thanks.