Fear of rabies. plz read everything.

1 stray dog ​​came barking into the house after seeing my dog ​​standing near the door December 25. I heard the dog barking and within 5 seconds I ran to see my dog ​​in another room lying peacefully and the dog was looking at the other side of the room and barking  as if he didn't see where my dog ​​had entered.no scratch and bite marks on my dog and my dog was yearly vaccinated dog. We did not done any post bite vaccination then. I watch the stray for 23days with perfect health condition.no rabies symptoms was shown.Then somehow that dog died for some unknown reasons  on 3 flr roof. I came to know about the incident after 1month of his dead and asap I vaccinated my dog 5courses post bite vaccine which was 2month late. googling I know late vaccination doesn't work if virus enters nerve. Yearly vaccine immunity suppress if dog is on steroid. my dog was on mild steroid for 2month Nov nd Dec.that dog didn't bite anyone. none of his friends becomes rabid till date. I develop OCD.