Please don't worry. Every bite by stray dog may not need RIG. It depends on type of exposure to decide whether to administer RIG. Rabipur
and and tetanus
within 1 hour is a very satisfactory timing to get administered.
The symptoms which you you are experiencing currently may be due to some other cause. Inj tetanus many a time produce mild fever and pain in the limbs.
There might also be some component associated with the anxiety
Just go on with your doctor's advice. Take all the vaccine
doses as per the schedule.
All the best.