Hello, my hamster had a respiratory tract infection, I took him to the vet and he gave him an antibiotic injection for 2 days. It has been 2 days since the last injection, but my hamster is still making strange noises, he seems weak, how many days will it take for him to recover from the disease? Is it normal that he is still having difficulty breathing, I would be very happy if you could help me, I am so sad about him.