: : I am fourteen years old and for the past year every month i have had flu. I am a healthy teenager, I dance every weekend and also days through the week.I also think alot of products with vitamin C in it.But nothing seems to be working. I have missed quite alot of school through illness.But the cold/flu is not mild.It Knocks me out for days. I have not seen my GP yet do you think i should,and what can be done about it?