18 years old. I suddenly started feeling unwell lastnight, having the shakes, cold , hot, really bad headache , couldnt sleep much, achy pain all over my body, and this morning the bottom of my back hurts and my legs. By looking on the internet it seems like some sort of flu? Im just wondering wether its worth going to see a doctor? Or wether im best to carry on taking paracetamol and staying in bed?