I think 37.7 is whr you need to be alil worried. 37.2 is still ok. Try to drink warm water or unsweetened milo or soup.
Fever is 37.5 and above but it may be the onset of fever ...drink plenty of plain water...keep hydrated
If its above 37.5, then you should head to the doctor. Have plenty of water & rest :)
Rest well first and drink water
Perfectly normal:)
It’s normal