Fever again

I woke up and my temperature was 37.0 degrees Celsius. If it were during the day, I'd think my normal temperature is just a bit high, but having this temperature in the morning is a bit rough 😢 This happened on Tuesday too, so I took the day off. I thought it might be the flu because of the biphasic fever, but the only symptoms are a slight fever and a sore throat, with no joint pain, cough, or runny nose, so I want to believe it's just a cold.