Good morning, girls at 7 am, the baby started crying in his sleep, I f…

Good morning, girls at 7 am, the baby started crying in his sleep, I first thought it was the tummy, he quickly calmed down and then slept on, later measured temperature 38.7, we put a candle, called our doctor, said to check again in an hour and call her back, as he woke up he wasn't capricious, smiled but was weak. He breathes normally, coughs, runny nose nothing like that Since yesterday, I had 2 days of temperature 38.6 Maybe someone has encountered this, what should we do next (on teeth still probably too early, we are 4 months old)