Night sweats at age 19?

For the past couple of days I've been sick with a cold. I've had the chills and a slight fever so of course I sleep under the blanket bc I'm freezing with chills before I fall asleep. but every time I fall asleep, even for just an hour, I wake up drenched in sweat! My whole body is totally wet, and its weird bc I play soccer & I never sweat on my legs, but when I wake up, there's sweat all over even on my legs. & when I wake up I stop sweating immediately and then I'm freezing again (maybe bc all the sweat). What is going on? Is it because I'm sick? This has never happened before