I've had the flu for over a week now and missed 4 days of school. Now I'm starting to get better until today when my left shoulder started to hurt and got worse over the hour, then my head and eye started to hurt badly and the left side of my body was hurting almost to my waist. I have a personal history of pains with my body, but it happens so much that my parents aren't taking me seriously. Do you know what's wrong or is this nothing to worry about (no doctor)?