Hello everyone, my son is 3.5 months old, his gums are red on both sid…

Hello everyone, my son is 3.5 months old, his gums are red on both sides, his temperature fluctuates between 36-38.3 every hour, I fed him all night, I'm not giving him formula and never have been... How can I help? They called an ambulance, they came, said teeth and give enterosgel, simethicone I don't understand why...?‍♀️ How can I help so that it passes slightly, he cries and gets upset, I don't know what to do...