When a guy becomes distant after sex?

I had sex with this guy and to be honest it didn't go aswell as I hoped I was nervous we didn't really know each other that well. It only happened yesterday but it feels like his becoming distant or I don't know if I'm being paranoid. He is still texting me and his not ignoring me or anything and we were joking about the sex but his not texting as much now I just feel crappy. He has his own business so I know his a busy so I don't want to bother him but I do really like him but I feel like I ruined things. Should I just move on or am I overreacting to much? Would he just ignore me full stop if he wasn't that interested?
When a guy becomes distant after sex?
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