Good evening mamas... What is considered a fever in a 1 year old? My son has not been feeling well…

Good evening mamas... What is considered a fever in a 1 year old? My son has not been feeling well his nose is running and he's all stopped up. He's coughing and has been having diarrhea. I think it's teething cause he has 2 top teeth coming in at the same time. I checked his temp and it was 101.2. I don't know if I should take him to the doctor or not. Any advice???