Are there any stay-at-home dads here? My little Eggplant is four months old. He had a fever yesterday and the hospital diagnosed a viral cold. The doctor prescribed Xiao’er Changgui Antipyretic Granules, but his temperature rose a little more today, above 38.5°C and even reaching 39°C. What should I do? Should I go back to the doctor, or what?

I'm asking here because he's been taking the medicine, and it's the second day of the fever. I don't really understand the efficacy of this medicine, and the doctor also said to only give him Meilin if his temperature is above 39°C, but Meilin seems to have a lot of side effects.