Feeling cold even though the temperature is not low...

I don't have a particular fever、It's not that I don't have an appetite.、I feel like it's cold。

My tongue feels numb、My throat is a little irritated。What is this...
Is it a harbinger of a cold?

It dropped to negative yesterday morning.、It was over 15 degrees during the day today, so I think there is a considerable temperature difference.。

Maybe I'll forget something or make a mistake...

I am consciously trying to increase the amount I eat.、Isn't that enough?。
health first。I think so again, so I will be careful.。