What Causes Body Pains, Profuse Sweating And Pain In Head And Neck?

I've been having flu like body aches, chills, some times would sweat it out profusely during the night after taking Advil, have not taken my temperature because I don't feel very hot, so maybe mild temperature sometimes... some neck and headache, for already 7 days. When I think I'm over it, it comes back again every day. No congestion or sore throat. Beside having been in contact with many people over the holidays with some turning out sick with the flu, I did have a mammogram and a head MRI with and without contrast about a week ago. Could a flu have symptoms like mine? But for how long? I'm sick of feeling sick! Also had to add some meds to my routine ones...Like Tegretol because I developed trigeminal neuralgia...so the DR asked me to double my gabapentin which I was already taking for my neuropathy, plus the Tegretol. Could these meds be causing these symptoms...? Sorry, I know its a bit much, but its what I'm dealing with. Any suggestions?