Temperature

Patient: Hello, i hav etwins of 1 year and 3 monthes, last month i found out that in the evening, every day they have temperature 37.1-37.3.. analises were ok, and also when doctor listened to the lungs, they also are ok… but the fact is that every day they still have this temperature… it it normal?? what can be the reason?? maybe teeth? thank u very much for answer..

Symptoms: nothing

Doctor: