A bite from a rabid animal (an animal infected with the rabies virus) is the most common form of rabies transmission. Non-bite exposure and human-to-human exposure are both rare.
Rabies symptoms may not show up for months, but when they do, a person is likely to feel like he or she has the flu. A headache, fever, and weakness are generally the first sign of the disease progressing. The place that was bitten is also generally sore, itchy, and may have a prickly feeling.
Did you know this dog, was it someone's family pet ? Dogs that are pets should have their rabies shots up to date.
As you buried the dog and did not have the animal test for rabies I think it would be OK to check in with your Dr.. Your sx do match flu sx so I hope that is all you have going on.
Big breath and don't let your mind wander into the land of "what if?" thinking.