What Causes Abnormally Severe Pain In Little Finger After An Injury?

I scratched my pinky finger on a metal chain link fence at school today. I haven t felt particularly different today. However, even though it is a small cut, the pain is quite high for a wound of its caliber. I know that symptoms of tetanus don t typically appear until at least 3 days, but is it wrong to scare myself by thinking I might have it?