I was once Bitten by my 3 weeks old pup. It was a little scratch , but bled a little. I did not take any vaccine. Now 7 8 years have passed. My dog is still alive and healthy. But I cannot stop thinking about that bite. I read about the long incubation period in humans. This has made me anxious. I can't sleep. I am really nervous. My mind is always tensed. I can't stop thinking about that day What can I do now. Please help.