What do 당신 do to feel better when 당신 have a bad cold 또는 flu.

Ok So a few days 이전 my cold started coming after sleeping over my 프렌즈 house her cousin had a cold and she wanted to sleep in the same room with us.She's 6 years old and i think i caught it from her because she slept on the floor with us and she was coughing on me the whole time and my friend told me not to worry because she's almost better.It didn't look like it she even vomit on me a bit and i wanted to go 집 and 샤워 but my friend said if i left she said that she was a afraid i wouldn't see her for a long time and i have a 심장 for people.So i changed my clothes and stayed there because i felt bad.I Think i have the flu now because i have been feeling weak and i had a huge headache i even fainted.Please tell me if 당신 think its the flu 또는 just a cold.If 당신 guys are sick i hope 당신 feel better soon.